THURLOW,
      J.:—This
      is
      an
      appeal
      from
      a
      re-assessment
      of
      
      
      income
      tax
      in
      respect
      of
      profits
      of
      $1,255,144
      realized
      by
      the
      
      
      appellant
      in
      its
      1963
      taxation
      year.
      The
      issue
      between
      the
      
      
      parties
      in
      respect
      of
      this
      amount,
      as
      stated
      in
      the
      agreed
      statement
      
      
      of
      facts,
      is
      whether
      it
      was
      derived
      from
      the
      operation
      of
      
      
      a
      mine
      during
      the
      period
      of
      36
      months
      commencing
      with
      the
      
      
      day
      on
      which
      the
      mine
      came
      into
      production
      within
      the
      meaning
      
      
      of
      Section
      83(5)*
      
      of
      the
      
        Income
       
        Tax
       
        Act.
      
      That
      the
      income
      in
      question
      was
      derived
      from
      the
      operation
      
      
      of
      a
      mine
      is
      not
      in
      dispute.
      What
      is
      in
      dispute
      is
      whether
      the
      
      
      Maclean
      workings
      (to
      use
      what
      I
      hope
      is
      a
      sufficiently
      neutral
      
      
      expression)
      which
      came
      into
      production
      as
      defined
      in
      Section
      
      
      83(6)
      on
      or
      about
      January
      1,
      1963
      and
      from
      which
      the
      income
      
      
      was
      derived
      constitute
      a
      mine
      to
      which
      the
      section
      applies
      or
      
      
      whether
      these
      workings
      are
      but
      part
      of
      a
      mine
      which
      came
      into
      
      
      production
      many
      years
      earlier
      and
      are
      on
      that
      account
      not
      
      
      within
      the
      section.
      
      
      
      
    
      The
      appellant
      was
      incorporated
      in
      November
      1961
      and
      is
      a
      
      
      wholly-owned
      subsidiary
      of
      Terra
      Nova
      Properties
      Limited.
      The
      
      
      latter
      company
      has
      since
      1928
      been
      the
      lessor
      to
      American
      
      
      Smelting
      and
      Refining
      Company
      (hereafter
      referred
      to
      as
      
      
      ASARCO)
      (or
      at
      times
      its
      subsidiary,
      Buchans
      Mining
      Company
      
      
      Limited)
      of
      certain
      mining
      rights
      and
      minerals
      in
      a
      large
      
      
      tract
      of
      land
      including
      the
      area
      in
      and
      about
      the
      town
      of
      
      
      Buchans
      in
      the
      Province
      of
      Newfoundland
      under
      arrangements
      
      
      for
      the
      sharing
      by
      Terra
      Nova
      Properties
      Limited
      of
      profits
      
      
      from
      the
      mining
      operations
      carried
      on
      by
      ASARCO,
      or
      its
      subsidiary,
      
      
      on
      the
      said
      land.
      Following
      its
      incorporation
      the
      appellant,
      
      
      by
      assignment
      from
      Terra
      Nova
      Properties
      Limited
      and
      by
      
      
      agreement
      with
      that
      company
      and
      ASARCO,
      became
      entitled
      to
      
      
      the
      reversion
      in
      that
      portion
      of
      the
      land
      in
      which
      the
      Maclean
      
      
      workings
      are
      situate
      and
      to
      the
      share
      of
      the
      profits
      arising
      from
      
      
      operations
      thereon
      by
      ASARCO
      which
      would
      otherwise
      have
      
      
      accrued
      to
      Terra
      Nova
      Properties
      Limited.
      
      
      
      
    
      ASARCO
      (or
      at
      times
      its
      subsidiary)
      has
      been
      engaged
      in
      
      
      mining
      operations
      in
      and
      about
      the
      town
      of
      Buchans
      since
      1928.
      
      
      In
      that
      year,
      following
      extensive
      exploratory
      work,
      it
      began
      
      
      mining
      ore,
      containing
      lead,
      zine
      and
      copper,
      to
      provide
      ore
      
      
      feed
      for
      a
      mill
      of
      approximately
      385,000
      tons
      annual
      milling
      
      
      capacity
      which
      it
      had
      constructed
      the
      previous
      year
      near
      a
      
      
      shaft
      which
      had
      been
      sunk
      to
      extract
      the
      ore
      from
      seven
      ore
      
      
      bodies
      comprising
      a
      group
      known
      as
      the
      Lucky
      Strike
      ore
      bodies.
      
      
      These
      lay
      at
      surface
      level
      and
      extended
      to
      a
      depth
      of
      710
      feet
      
      
      below
      the
      surface.
      The
      largest
      of
      them
      had
      a
      horizontal
      length
      
      
      of
      nearly
      2,000
      feet
      and
      from
      1928
      until
      1958,
      when
      the
      ore
      
      
      bodies
      were
      worked
      out,
      some
      6.7
      million
      tons
      of
      ore
      were
      extracted
      
      
      from
      them.
      
      
      
      
    
      In
      the
      meantime
      between
      1931
      and
      1935
      another
      shaft
      had
      
      
      been
      sunk
      more
      than
      a
      mile
      to
      the
      eastward
      of
      the
      Lucky
      Strike
      
      
      shaft
      for
      the
      purpose
      of
      extracting
      similar
      ore
      from
      two
      other
      
      
      large
      ore
      bodies
      known
      as
      the
      Oriental
      ore
      bodies
      which
      also
      
      
      lay
      at
      surface
      level
      and
      which
      extended
      to
      a
      depth
      of
      some
      445
      
      
      feet.
      An
      underground
      haulage
      tunnel
      had
      also
      been
      constructed
      
      
      at
      a
      depth
      of
      575
      feet
      below
      the
      surface
      of
      the
      ground
      for
      the
      
      
      purpose
      of
      transporting
      the
      ore
      from
      the
      Oriental
      shaft
      to
      the
      
      
      Lucky
      Strike
      shaft
      where
      it
      was
      raised
      to
      the
      surface
      and
      fed
      
      
      to
      the
      mill.
      From
      1935
      to
      1963
      some
      3.6
      million
      tons
      of
      ore
      were
      
      
      mined
      from
      these
      two
      ore
      bodies.
      
      
      
      
    
      Between
      1943
      and
      1955
      some
      209,623
      tons
      of
      ore
      were
      also
      
      
      mined
      from
      three
      small
      ore
      bodies
      known
      as
      the
      Old
      Buchans
      
      
      ore
      bodies
      which
      had
      been
      discovered
      as
      far
      back
      as
      1905
      and
      
      
      which
      lay
      at
      surface
      approximately
      one-half
      mile
      west
      of
      the
      
      
      Oriental
      shaft.
      These
      ore
      bodies
      extended
      to
      a
      depth
      of
      just
      
      
      over
      220
      feet
      and
      the
      material
      from
      them
      was
      transported
      via
      
      
      an
      underground
      tunnel
      150
      feet
      below
      the
      surface
      to
      the
      Oriental
      
      
      shaft,
      down
      that
      shaft
      to
      the
      haulage
      tunnel
      and
      thence
      by
      it
      
      
      to
      the
      Lucky
      Strike
      shaft
      where
      it
      was
      raised
      to
      the
      surface
      
      
      and
      fed
      to
      the
      mill.
      By
      1955
      these
      three
      ore
      bodies
      had
      been
      
      
      worked
      out.
      
      
      
      
    
      In
      the
      meantime
      in
      1948
      in
      the
      course
      of
      an
      extensive
      exploratory
      
      
      drilling
      program
      two
      large
      ore
      bodies
      known
      as
      the
      Rother-
      
      
      mere
      ore
      bodies
      were
      discovered
      to
      the
      north-westward
      of
      the
      
      
      Lucky
      Strike
      ore
      bodies
      at
      a
      depth
      extending
      from
      740
      feet
      to
      
      
      1,700
      feet
      below
      the
      surface
      of
      the
      ground.
      These
      ore
      bodies
      
      
      were
      brought
      into
      production
      in
      1950
      following
      the
      sinking
      of
      
      
      a
      shaft
      some
      3,000
      feet
      to
      the
      north-westward
      of
      the
      Lucky
      Strike
      
      
      shaft
      and
      the
      construction
      of
      an
      underground
      haulage
      tunnel
      at
      
      
      the
      585
      foot
      level
      from
      the
      Lucky
      Strike
      shaft
      to
      the
      Rother-
      
      
      mere
      shaft.
      From
      1950
      to
      the
      end
      of
      1963
      some
      3.9
      million
      tons
      
      
      of
      ore
      were
      mined
      from
      the
      Rothermere
      ore
      bodies
      and
      transported
      
      
      via
      the
      Rothermere
      shaft
      and
      the
      haulage
      tunnel
      to
      the
      
      
      Lucky
      Strike
      shaft
      where
      they
      were
      raised
      to
      the
      surface
      for
      
      
      processing
      in
      the
      mill.
      
      
      
      
    
      The
      planned
      depth
      of
      the
      Rothermere
      shaft
      was
      originally
      
      
      1,715
      feet
      which
      would
      have
      taken
      it
      to
      the
      deepest
      level
      of
      the
      
      
      ore
      body.
      However,
      in
      1950
      surface
      drilling
      had
      disclosed
      the
      
      
      presence
      of
      an
      even
      deeper
      ore
      body
      located
      some
      3,000
      feet
      to
      
      
      the
      north-westward
      of
      the
      shaft.
      The
      shaft
      was
      thereupon
      
      
      extended
      to
      a
      depth
      of
      2,513
      feet
      and
      a
      tunnel
      was
      opened
      at
      
      
      the
      2,300
      foot
      level
      to
      the
      new
      ore
      body
      for
      the
      purpose
      of
      carrying
      
      
      out
      further
      exploratory
      drilling
      to
      determine
      its
      size
      and
      
      
      quality.
      This
      ore
      body
      has
      become
      known
      as
      the
      Maclean
      ore
      
      
      body
      and
      is
      the
      ore
      body
      from
      the
      mining
      of
      which
      the
      income
      
      
      here
      in
      question
      was
      derived.
      It
      is
      about
      half
      a
      mile
      long,
      it
      
      
      has
      a
      maximum
      width
      of
      600
      feet
      and
      its
      average
      thickness
      is
      
      
      40
      feet.
      It
      is
      estimated
      to
      have
      contained
      some
      3.5
      million
      tons
      
      
      of
      ore
      all
      lying
      at
      a
      depth
      of
      from
      2,050
      to
      3,250
      feet
      below
      the
      
      
      surface
      of
      the
      ground.
      Between
      1957
      and
      1960
      a
      shaft
      was
      sunk
      
      
      from
      the
      surface
      of
      this
      ore
      body
      to
      a
      depth
      of
      3,536
      feet
      and
      
      
      a
      haulage
      tunnel
      about
      a
      mile
      long
      was
      also
      constructed
      connecting
      
      
      it
      with
      the
      Lucky
      Strike
      shaft
      at
      a
      depth
      of
      585
      feet
      from
      
      
      the
      surface.
      Ore
      from
      this
      ore
      body
      is
      raised
      by
      the
      Maclean
      
      
      shaft
      to
      the
      585
      foot
      level
      and
      transported
      via
      this
      tunnel
      to
      
      
      the
      Lucky
      Strike
      shaft
      where
      it
      is
      raised
      to
      the
      surface
      and
      
      
      milled.
      Waste
      rock
      from
      the
      operation
      is
      raised
      directly
      to
      the
      
      
      surface
      at
      the
      Maclean
      shaft
      and
      stockpiled
      there
      for
      ultimate
      
      
      removal
      by
      truck.
      Production
      of
      ore
      from
      this
      ore
      body
      in
      
      
      reasonable
      commercial
      quantities
      was
      achieved
      in
      the
      latter
      part
      
      
      of
      1962
      and
      some
      247,000
      tons
      of
      ore
      were
      mined
      from
      it
      in
      
      
      1963,
      the
      year
      in
      question
      in
      these
      proceedings.
      The
      construction
      
      
      of
      the
      haulage
      tunnel
      was
      undertaken
      for
      economic
      reasons
      
      
      concerned
      with
      the
      use
      of
      the
      existing
      underground
      facilities
      
      
      at
      the
      Lucky
      Strike
      shaft
      and
      in
      preference
      to
      surface
      haulage
      
      
      which
      would
      have
      involved
      difficulties
      in
      winter
      and
      greater
      
      
      expense.
      
      
      
      
    
      The
      Maclean
      shaft
      was
      constructed
      at
      a
      cost
      of
      $2,250,000
      
      
      exclusive
      of
      other
      development
      costs
      incurred
      to
      bring
      the
      Mac-
      
      
      lean
      ore
      body
      into
      production.
      The
      shaft
      is
      circular
      in
      shape,
      
      
      and
      is
      14
      feet
      in
      diameter.
      It
      is
      fitted
      with
      hoisting
      compartments,
      
      
      a
      manway
      compartment
      and
      spaces
      for
      pipes,
      cables
      and
      
      
      other
      equipment.
      It
      has
      openings
      for
      ten
      levels
      at
      which
      ore
      is
      
      
      mined,
      has
      a
      loading
      pocket
      from
      which
      the
      ore
      is
      loaded
      in
      
      
      skips
      and
      hoisted,
      a
      dump
      for
      waste
      rock
      and
      pumping
      stations
      
      
      at
      three
      different
      levels.
      At
      the
      surface
      there
      are
      five
      or
      six
      
      
      buildings
      including
      what
      is
      referred
      to
      as
      a
      head
      frame
      and
      a
      
      
      hoist
      house.
      
      
      
      
    
      Both
      the
      operation
      of
      the
      Maclean
      workings
      and
      the
      systems
      
      
      for
      working
      them
      are
      integrated
      with
      those
      of
      the
      other
      mineral
      
      
      workings
      at
      or
      near
      Buchans
      and
      with
      the
      mill
      as
      part
      of
      a
      
      
      single
      operation
      carried
      on
      by
      ASARCO.
      There
      is
      but
      one
      man-
      
      
      agement
      and
      staff—all
      employed
      and
      directed
      by
      ASARCO.
      The
      
      
      production
      of
      ore
      from
      all
      the
      workings
      is
      geared
      to
      the
      capacity
      
      
      of
      the
      mill
      to
      process
      it.
      While
      records
      are
      kept
      as
      to
      the
      quantity
      
      
      and
      quality
      of
      the
      ore
      extracted
      from
      different
      workings
      
      
      it
      is
      all
      fed
      to
      the
      mill
      and
      no
      further
      distinction
      is
      made
      
      
      between
      any
      of
      it
      or
      of
      its
      products.
      Sand
      for
      filling
      worked
      out
      
      
      spaces,
      compressed
      air
      to
      operate
      pneumatic
      drills
      and
      ventilating
      
      
      air
      for
      the
      Maclean
      workings
      are
      all
      supplied
      and
      conducted
      
      
      by
      systems
      which
      serve
      the
      Rothermere
      and
      Maclean
      workings
      
      
      via
      the
      Rothermere
      shaft
      and
      the
      exploratory
      tunnel
      previously
      
      
      referred
      to.
      Excess
      water
      from
      the
      Maclean
      workings
      is
      carried
      
      
      away
      by
      the
      same
      route
      to
      the
      Rothermere
      shaft
      where
      it
      is
      
      
      pumped
      to
      the
      surface.
      Miners
      working
      the
      Maclean
      deposit
      
      
      reach
      it
      via
      the
      Rothermere
      shaft
      and
      the
      same
      tunnel,
      though
      
      
      some
      personnel
      gain
      access
      by
      the
      Maclean
      shaft.
      
      
      
      
    
      On
      these
      facts
      the
      precise
      question
      to
      be
      determined,
      as
      I
      
      
      see
      it,
      is
      whether
      the
      Maclean
      workings
      constitute
      a
      mine
      within
      
      
      the
      meaning
      of
      Section
      83(5)
      of
      the
      Act.
      In
      its
      context
      in
      that
      
      
      section
      the
      word
      ‘
      mine”
      in
      my
      opinion
      has
      its
      ordinary
      meaning
      
      
      and
      this
      indeed
      was
      the
      position
      taken
      by
      counsel
      for
      both
      
      
      parties,
      though
      they
      differed
      in
      their
      submissions
      as
      to
      the
      application
      
      
      of
      the
      section
      to
      the
      facts.
      However,
      the
      ordinary
      meaning
      
      
      of
      the
      word
      ‘‘mine’’
      is
      not
      precise
      and
      can
      vary
      widely
      according
      
      
      to
      the
      context
      in
      which
      it
      is
      found.
      In
      its
      context
      in
      Section
      
      
      83(5)
      it
      is
      obviously
      intended
      to
      embrace
      something
      the
      
      
      development
      of
      which
      Parliament
      wished
      to
      encourage
      by
      granting
      
      
      a
      three-year
      exemption
      from
      income
      taxation.
      In
      
        North
       
        Bay
      
        Mica
       
        Co.
       
        Lid.
      
      v.
      
        M.N.R.,
      
      [1958]
      S.C.R.
      957;
      [1958]
      C.T.C.
      208
      
      
      at
      212,
      a
      somewhat
      similar
      earlier
      section
      was
      held
      to
      apply
      
      
      where
      a
      mine
      had
      been
      established
      at
      the
      abandoned
      and
      dismantled
      
      
      site
      of
      a
      former
      mining
      operation.
      
      
      
      
    
      In
      that
      case
      Cartwright,
      J.
      (as
      he
      then
      was)
      speaking
      for
      the
      
      
      majority
      of
      the
      Court
      said
      :
      
      
      
      
    
        For
        the
        appellant
        it
        is
        contended
        that
        the
        word
        “mine”
        as
        used
        
        
        in
        clause
        (b)
        of
        Section
        74(1)
        means
        not
        “a
        portion
        of
        the
        earth
        
        
        containing
        mineral
        deposits”
        but
        rather
        “a
        mining
        concern
        taken
        
        
        as
        a
        whole,
        comprising
        mineral
        deposits,
        workings,
        equipment
        and
        
        
        machinery,
        capable
        of
        producing
        ore”.
        Support
        for
        this
        contention
        
        
        is
        sought
        in
        the
        circumstances
        that
        if
        “mine”
        has
        the
        first
        of
        the
        
        
        two
        suggested
        meanings,
        then,
        (i)
        the
        phrase
        “certified
        .
        ..
        to
        have
        
        
        been
        operating
        on
        mineral
        deposits”
        is
        inapt
        as
        it
        presupposes
        an
        
        
        entity
        capable
        of
        carrying
        on
        operations;
        and
        (ii)
        the
        draftsman
        
        
        should
        have
        substituted
        for
        the
        clause
        “that
        came
        into
        production”
        
        
        the
        clause
        “that
        was
        brought
        into
        production”.
        From
        this
        the
        
        
        appellant
        goes
        on
        to
        argue
        that
        the
        “mine”
        of
        the
        appellant
        is
        one
        
        
        entirely
        different
        from
        the
        “mine”
        of
        Purdy
        Mica
        Mines
        Limited.
        
        
        
        
      
        I
        incline
        to
        the
        view
        that
        this
        contention
        is
        sound;
        .
        .
        .
        
        
        
        
      
      While
      some
      of
      the
      wording
      referred
      to
      as
      supporting
      the
      
      
      appellant’s
      contention
      in
      that
      case
      is
      not
      found
      in
      the
      present
      
      
      Section
      83(5)
      and
      the
      use
      in
      the
      French
      language
      edition
      of
      
      
      Section
      83(5)
      of
      the
      expression
      ‘‘provenant
      de
      l’exploitation
      
      
      d’une
      mine”
      is
      at
      least
      suggestive
      of
      the
      word
      ‘‘mine’’
      being
      
      
      used
      in
      reference
      to
      the
      ore
      body
      to
      be
      mined,
      neither
      party
      
      
      sought
      to
      attribute
      to
      the
      word
      any
      narrower
      meaning
      than
      that
      
      
      referred
      to
      in
      the
      passage
      cited,
      that
      is
      to
      say,
      “a
      mining
      concern
      
      
      taken
      as
      a
      whole,
      comprising
      mineral
      deposits,
      workings,
      
      
      equipment
      and
      machinery,
      capable
      of
      producing
      ore’’.
      Indeed
      
      
      the
      chief
      difference
      between
      the
      parties
      seemed
      to
      me
      to
      lie
      in
      
      
      that
      the
      appellant
      stressed
      the
      element
      of
      capability
      of
      producing
      
      
      ore
      while
      counsel
      for
      the
      Minister
      emphasized
      his
      concept
      of
      “a
      
      
      mining
      concern
      taken
      as
      a
      whole’’.
      
      
      
      
    
      To
      my
      mind
      the
      question
      posed
      by
      the
      present
      case
      is
      not
      to
      
      
      be
      solved
      by
      looking
      at
      the
      Buchans’
      locality
      as
      a
      whole
      and
      
      
      posing
      the
      question
      whether
      there
      is
      more
      than
      one
      operation
      
      
      being
      carried
      on
      or
      more
      than
      one
      mining
      concern
      there
      or
      more
      
      
      than
      one
      mine.
      The
      correct
      approach,
      as
      I
      see
      it,
      is
      to
      examine
      
      
      the
      facts
      relating
      to
      the
      Maclean
      workings
      themselves
      in
      the
      
      
      picture
      as
      a
      whole
      while
      bearing
      in
      mind
      the
      object
      of
      the
      
      
      statutory
      provisions.
      
      
      
      
    
      Do
      the
      Maclean
      workings
      then
      constitute
      a
      mine
      within
      the
      
      
      ordinary
      meaning
      of
      that
      term
      as
      used
      in
      Section
      83(5)
      ?
      There
      
      
      is,
      first,
      an
      extensive
      and
      distinct
      body
      of
      ore,
      which
      originally
      
      
      contained
      enough
      material
      to
      feed
      the
      mill
      at
      Buchans
      for
      about
      
      
      nine
      years,
      situate
      horizontally
      more
      than
      1,000
      feet
      from
      the
      
      
      nearest
      known
      ore
      body
      and
      vertically
      more
      than
      350
      feet
      deeper
      
      
      than
      it.
      Next,
      there
      are
      the
      mining
      shaft
      and
      other
      extensive
      
      
      excavations
      in
      the
      ground
      made
      specifically
      for
      the
      extraction
      
      
      of
      that
      particular
      body
      of
      ore.
      There
      are
      present,
      as
      well,
      all
      
      
      the
      necessary
      buildings,
      tackle,
      equipment,
      machinery
      and
      systems,
      
      
      whether
      by
      extension
      of
      existing
      systems
      or
      independently
      
      
      installed,
      to
      carry
      out
      the
      mining
      of
      the
      particular
      body
      of
      ore.
      
      
      There
      is
      undoubtedly
      the
      capability
      of
      producing
      ore.
      Finally,
      
      
      the
      expenditures
      of
      capital
      required
      for
      the
      installation
      of
      the
      
      
      shaft
      and
      the
      other
      developments
      required
      to
      bring
      this
      particular
      
      
      body
      of
      ore
      into
      production
      were
      made
      in
      the
      course
      of
      
      
      what
      I
      would
      regard
      as
      a
      venture
      in
      the
      pursuit
      of
      profit
      by
      
      
      the
      extraction
      of
      the
      particular
      body
      of
      ore.
      This,
      together
      with
      
      
      the
      subsequent
      operation
      of
      extracting
      the
      ore,
      as
      I
      see
      it,
      constitutes
      
      
      in
      itself
      a
      mining
      concern
      notwithstanding
      its
      integration
      
      
      with
      the
      larger
      and
      overall
      operation.
      The
      workings
      accordingly
      
      
      appear
      to
      me
      to
      have
      all
      the
      characteristics
      of
      a
      mine
      
      
      within
      the
      meaning
      of
      the
      statutory
      provision.
      
      
      
      
    
      Two
      further
      considerations
      which
      appear
      to
      me
      to
      lend
      support
      
      
      to
      this
      conclusion
      are
      (1)
      that
      the
      installation
      and
      equipment
      
      
      of
      the
      Maclean
      shaft
      suggests
      that
      the
      previously
      existing
      
      
      shafts,
      facilities
      and
      equipment
      would
      not
      have
      served
      satisfactorily
      
      
      the
      purpose
      of
      exploiting
      the
      Maclean
      ore
      body
      if,
      indeed,
      
      
      they
      could
      have
      been
      made
      to
      serve
      it
      at
      all,
      and
      (2)
      that
      the
      
      
      investment
      of
      capital
      and
      the
      development
      of
      the
      productive
      
      
      capacity
      of
      the
      Maclean
      workings,
      which
      otherwise
      might
      or
      
      
      might
      not
      have
      taken
      place,
      appear
      to
      me
      to
      be
      among
      the
      objects
      
      
      that
      the
      exemption
      of
      the
      section
      was
      designed
      to
      encourage.
      
      
      
      
    
      The
      Minister’s
      contention
      was
      basically
      that
      there
      is
      and
      has
      
      
      been
      but
      one
      mine
      at
      Buchans
      and
      that
      the
      Maclean
      workings
      
      
      are
      simply
      an
      extension
      of
      an
      old
      or
      existing
      mine
      into
      a
      new
      
      
      ore
      body
      and
      not
      a
      new
      mine
      within
      the
      meaning
      of
      the
      statute.
      
      
      That
      the
      Maclean
      workings
      can
      in
      a
      sense
      be
      regarded
      as
      an
      
      
      extension
      of
      the
      earlier
      workings
      is,
      I
      think,
      undeniable.
      It
      
      
      depends
      on
      how
      the
      matter
      is
      viewed.
      Almost
      any
      additional
      
      
      step
      by
      ASARCO
      in
      the
      development
      of
      its
      undertaking
      at
      
      
      Buchans
      might
      in
      some
      sense
      be
      regarded
      as
      an
      extension
      of
      its
      
      
      original
      undertaking
      there.
      I
      have
      more
      difficulty
      in
      regarding
      
      
      the
      whole
      mining
      operation
      there
      as
      being
      one
      of
      a
      single
      mine
      
      
      but
      perhaps
      that
      too
      is
      possible.
      From
      the
      point
      of
      view
      of
      
      
      ASARCO
      it
      probably
      could
      be
      convenient
      to
      refer
      to
      the
      whole
      
      
      mining
      and
      milling
      undertaking
      at
      Buchans
      as
      a
      mine
      when
      
      
      distinguishing
      it
      from
      a
      similar
      undertaking
      somewhere
      else
      in
      
      
      the
      world.
      In
      a
      like
      context
      it
      might
      be
      possible
      to
      refer
      to
      the
      
      
      mining
      portion
      of
      the
      operation,
      as
      well,
      as
      a
      mine
      though
      I
      
      
      should
      have
      thought
      the
      plural
      of
      the
      word
      would
      be
      more
      apt.
      
      
      Apart
      from
      such
      a
      context
      one
      seeking
      a
      word
      to
      characterize
      
      
      the
      mining
      operation
      at
      Buchans
      would,
      I
      think,
      almost
      certainly
      
      
      choose
      the
      plural
      for
      it
      seems
      to
      me
      that
      only
      in
      a
      strained
      or
      
      
      particular
      sense
      would
      all
      the
      various
      workings
      there
      be
      referred
      
      
      to
      as
      a
      “mine”.
      
      
      
      
    
      Moreover
      to
      determine
      that
      workings
      are
      in
      some
      sense
      an
      
      
      extension
      of
      a
      previously
      established
      mine
      is
      to
      my
      mind
      inconclusive
      
      
      on
      the
      question
      to
      be
      answered.
      The
      expressions
      “new
      
      
      mine’’,
      “old
      mine’’
      or
      similar
      expressions
      are
      not
      found
      in
      
      
      Section
      83(5).
      Nor
      is
      the
      word
      ‘‘extension’’
      found
      in
      the
      wording.
      
      
      The
      word
      used
      is
      “mine”
      and
      the
      question
      which
      it
      poses
      
      
      is
      whether
      the
      facts
      disclose
      a
      mine
      to
      which
      the
      section
      applies.
      
      
      There
      would,
      as
      I
      see
      it,
      be
      no
      difficulty
      in
      deciding
      that
      an
      
      
      extension
      of
      a
      mining
      operation
      to
      a
      new
      body
      of
      ore,
      found
      
      
      lying
      adjacent
      to
      a
      body
      being
      worked,
      by
      using
      the
      same
      excavation,
      
      
      shaft
      and
      facilities
      for
      mining
      it
      was
      not
      a
      mine
      to
      
      
      which
      Section
      83(5)
      applied.
      That
      conclusion,
      however,
      would,
      
      
      in
      my
      view,
      be
      reached
      not
      because
      what
      was
      being
      considered
      
      
      was
      an
      extension
      of
      a
      previously
      existing
      mine
      but
      because
      on
      
      
      the
      facts
      as
      disclosed
      it
      could
      not
      by
      itself
      be
      regarded
      as
      a
      
      
      mine
      in
      the
      ordinary
      sense
      of
      the
      word.
      It
      will
      no
      doubt
      in
      
      
      every
      close
      situation
      become
      a
      matter
      of
      fact
      and
      degree
      whether
      
      
      or
      not
      what
      is
      being
      considered
      is
      a
      mine
      but
      to
      my
      mind
      the
      
      
      example
      I
      have
      put
      is
      far
      different
      from
      the
      present
      situation
      
      
      where
      all
      the
      elements
      necessary
      for
      a
      distinct
      mine
      appear
      to
      
      
      me
      to
      be
      present.
      
      
      
      
    
      In
      my
      opinion
      the
      fact
      that
      the
      mining
      and
      milling
      operation
      
      
      of
      ASARCO
      at
      Buchans,
      or
      the
      mining
      operation
      alone
      can
      be
      
      
      regarded
      in
      each
      case
      as
      a
      single
      operation
      is
      also
      inconclusive.
      
      
      One
      might,
      for
      example,
      say
      the
      same
      of
      two
      sets
      of
      workings
      
      
      ten
      miles
      apart
      with
      no
      physical
      connection
      between
      them
      but
      
      
      conducted
      by
      the
      same
      management
      and
      staff.
      That
      it
      can
      be
      
      
      said
      that
      there
      is
      but
      one
      operation
      is,
      no
      doubt,
      a
      fact
      to
      be
      
      
      considered
      along
      with
      the
      other
      facts
      and
      it
      seems
      possible
      that
      
      
      the
      degree
      of
      integration
      of
      the
      systems
      and
      management,
      in
      a
      
      
      case
      where
      the
      other
      facts
      are
      inconclusive,
      may
      even
      become
      
      
      decisive.
      But
      as
      a
      fact
      bearing
      on
      the
      question
      it
      appears
      to
      me
      
      
      to
      pale
      in
      importance
      to
      facts
      such
      as
      the
      wide
      separation
      of
      ore
      
      
      bodies
      in
      distance
      and
      depth,
      the
      necessity
      for
      substantial
      separate
      
      
      facilities
      to
      extract
      the
      ore
      and
      the
      need
      to
      invest
      substantial
      
      
      amounts
      of
      capital
      specifically
      for
      the
      purpose
      of
      setting
      
      
      up
      the
      physical
      establishment
      required
      for
      profitable
      extraction
      
      
      of
      the
      ore.
      
      
      
      
    
      Counsel
      for
      the
      Minister
      also
      cited
      
        Spencer
      
      v.
      
        Scurr
      
      (1862),
      
      
      31
      Beav.
      334,
      and
      
        Cowley
      
      v.
      
        Wellesley
      
      (1866),
      33
      Beav.
      635,
      in
      
      
      support
      of
      his
      submission
      that
      all
      the
      workings
      at
      Buchans
      
      
      constituted
      one
      mine.
      These
      cases,
      however,
      were
      concerned
      
      
      with
      the
      question
      of
      the
      right,
      as
      between
      tenant
      for
      life
      and
      
      
      remainderman,
      to
      rentals
      from
      the
      exploitation
      of
      mineral
      
      
      deposits
      and
      turn
      on
      a
      principle
      which,
      as
      I
      see
      it,
      has
      no
      
      
      bearing
      on
      a
      question
      of
      the
      kind
      involved
      in
      the
      present
      case.
      
      
      I
      do
      not
      therefore
      regard
      them
      as
      useful
      in
      a
      case
      of
      this
      kind.
      
      
      
      
    
      The
      appeal
      accordingly
      succeeds
      and
      it
      will
      be
      allowed
      with
      
      
      costs.