Detailed Notes on zinc sulfide
: Adjectis synonymis et veteribus et recentioribus ac novissimarum analysium chemicarum summis. Systematis mineralium naturalis prodromus. OCLC 995480390. ^ a bMining was unmechanized and labor-intense, with pickmen releasing the ore with the rock, and mine-boys or carusi carrying baskets of ore for the area, generally via a mile or even more of