The Collaborative International Dictionary
Free-milling
Free-milling \Free"-mill`ing\, a.
Yielding free gold or silver; -- said of certain ores which
can be reduced by crushing and amalgamation, without roasting
or other chemical treatment.
--Raymond.
Wiktionary
free-milling
a. Yielding free gold or silver; said of certain ores that can be reduced by crushing and amalgamation, without roasting or other chemical treatment.