prospect shaft

prospect shaft

[′prä‚spekt ‚shaft]
(mining engineering)
A shaft constructed for the purpose of excavating mineral-bearing ground.
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References in periodicals archive ?
A recent independent preliminary economic assessment at Birch Lake recommended the sinking of a prospect shaft for bulk sampling as part of a feasibility study.
The state of Minnesota is currently considering our application to sink the recommended prospect shaft.
In the Birch Lake project area we plan to continue to move forward on three fronts: in-fill drilling, expansion drilling and prospect shaft construction and bulk sampling on the PGM-copper-nickel resource; evaluation of the Dunka massive sulfide target; and evaluation of the Maturi copper-nickel target recently acquired from INCO.
Mining engineer Kurt Hollberg of Hollberg Professional Group PC, Denver, will assist in developing plans for a proposed prospect shaft.
FRANCONIA MINERALS CORPORATION (TSX VENTURE:FRA)(OFEX:FRA) has initiated discussions with state and federal regulatory agencies to determine the scope of environmental review, and permits and approvals required to construct a prospect shaft to collect an underground bulk sample for metallurgical pilot plant tests at its Birch Lake platinum group metal (PGM)-copper-nickel prospect located about 60 miles north of Duluth, Minnesota.