4 ms·
According to this article, a good open-pit gold mine has deposits of about two grams per tonne. http://www.mining.com/web/making-the-grade-understanding-explor
by jdietrich 8y ago
According to this article, a good open-pit gold mine has deposits of about two grams per tonne.
http://www.mining.com/web/making-the-grade-understanding-exploration-results/ http://www.mining.com/web/making-the-grade-understanding-exp...