To crush (ore); in modern use, by means of the machine called a ‘stamp’.

transitive. To break up (the larger pieces of crude lead ore).

Mining. (transitive) To crush (tin ore) in a mill. (See craze-mill, n., crazing, n. 3.)

transitive. To separate (the ore) from the dross or refuse by means of a ‘tye’.

transitive. Mining. To break (ore) into smaller pieces.

transitive. To separate tin ore from the gangue or rough ore by stirring the slimes in a kieve, and allowing the heavier particles to settle.

Mining. To dress (lead or tin ore) by agitating it in water; cf. trunk, n. 9.

transitive. Mining. To convert (ore, or a metal or mineral in it) into a richer or purer form by mechanical or physical means.

Mining. to griddle out: to screen ore with a griddle.

To dress (ore) so as to separate the coarser and finer portions, by shaking it under water in a sieve or a box with perforated bottom, or by means…

transitive. Mining. To mix (soil containing gold, opals, etc.) with water in a container, in order to separate out the precious substances. Also in…