Ancient Riverbed Claims - Gold found in beds of rivers now extinct.
Arastra - A mill, consisting of one or more large stones dragged
around on a circular bed, used to grind ore.
Argentiferous - Bearing or producing
silver.
Assaying - Finding the percentage of a given metal in ore or
bullion.
Assessment - Amount levied on capital stock.
Bar Claims - Gold found in in low collections of
sand, or gravel, in rivers, exposed at low water.
Barren Contract - A contract vein, or a place in the contract vein,
which has no mineral.
Base Bullion - Precious metals contained in lead.
Bedrock - The formation underlying pay-dirt.
Bench Claims - Minerals found in narrow tableland on
hill-side, above a river.
Blende - An ore of zinc, consisting of zinc and sulphur.
Blind Lode - A lode having no outcrop.
Blossom Rock - Float ore, found upon the surface or near where
lodes or ledges outcrop, and from which they have become detached.
Bonanza - Fair weather; a mine said to en bonanza when it is
yielding a profit. It is a Spanish term meaning good-luck.
Breasting Ore - Taking ore from the face, breast or end of a
tunnel. Bullion. - Precious metals, gold and silver, etc., not coined.
Bucket Line Dredge - Unlike modern dredges; a bucket line dredge was
very large. Instead of sucking up water and gravel through the use of
water pressure, the bucket line dredges would scoop it up and run it
through a long sluice box.
Cage - The elevator used
for hoisting and lowering the ore cars, men and materials of a
mine.
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