A hard rock mine is a tunnel that is mamma into solid rock for the sole purpose of finding valuable or precious rocks, minerals, or metals. Gold originates deep at intervals the earth in places known as Pockets. The pockets area unit crammed with gold, heavy ore, and quartz.
Hard rock mines area unit one of the foremost effective however dangerous ways to recover gold. Early hard rock mines were hand mamma, and therefore the Chinese were often hired to dig them. hard rock drifts (horizontal passageways into hillsides) were mamma with tnt. The ore was then put into a mining automobile that was often pulled by burros. larger mining corporations might afford machines that pulled the mine carts up the passageways. The ore, which consisted of quartz, gold, and alternative metals was crushed.
The crushed material was emotional to a mercury-coated table. The mercury would adhere to the gold and therefore the material that was any less dense than silver would slide right over the mercury. in the end this was done, the mercury was superheated and therefore the gold remained. The gold was then become gold bars and transferred to the nearest bank by stagecoach.
0 commentaires:
Enregistrer un commentaire