stamp mill

noun, Mining.
1.
a mill or machine in which ore is crushed to powder by means of heavy stamps or pestles.
Also, stamping mill.
Origin
1740-50
Examples from the web for stamp mill
  • It contains a five-stamp mill and other equipment used to pulverize ore and recover gold.
  • It has been said that when the last stamp mill ceased operating, the town was so quiet that people could not sleep.
  • However, one company planned to erect a stamp mill to crush the petrified wood into industrial abrasives.
  • In nature's stamp mill they had been polished down until they represented a type.
British Dictionary definitions for stamp mill

stamp mill

noun
1.
(metallurgy) a machine for crushing ore