The Collaborative International Dictionary of English v.0.48:

Platt \Platt\, n. (Mining)
   See Lodge, n. --Raymond.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lodge \Lodge\ (l[o^]j), n. [OE. loge, logge, F. loge, LL. laubia
   porch, gallery, fr. OHG. louba, G. laube, arbor, bower, fr.
   lab foliage. See Leaf, and cf. Lobby, Loggia.]
   1. A shelter in which one may rest; as:
      (a) A shed; a rude cabin; a hut; as, an Indian's lodge.
          --Chaucer.
          [1913 Webster]

                Their lodges and their tentis up they gan bigge
                [to build].                       --Robert of
                                                  Brunne.
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                O for a lodge in some vast wilderness! --Cowper.
      (b) A small dwelling house, as for a gamekeeper or
          gatekeeper of an estate. --Shak.
      (c) A den or cave.
      (d) The meeting room of an association; hence, the
          regularly constituted body of members which meets
          there; as, a masonic lodge.
      (c) The chamber of an abbot, prior, or head of a college.
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   2. (Mining) The space at the mouth of a level next the shaft,
      widened to permit wagons to pass, or ore to be deposited
      for hoisting; -- called also platt. --Raymond.
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   3. A collection of objects lodged together.
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            The Maldives, a famous lodge of islands. --De Foe.
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   4. A family of North American Indians, or the persons who
      usually occupy an Indian lodge, -- as a unit of
      enumeration, reckoned from four to six persons; as, the
      tribe consists of about two hundred lodges, that is, of
      about a thousand individuals.
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   Lodge gate, a park gate, or entrance gate, near the lodge.
      See Lodge, n., 1
      (b) .
          [1913 Webster]