Mining - WikipediaMining is extraction of valuable minerals or other geological materials from the earth usually .. The silver crisis of 1465 occurred when all mines had reached depths at . Although an increased use of bank notes, credit and copper coins during this period did decrease the value of, and dependence on, precious metals, gold.when did mining start,History of coal mining - WikipediaThe history of coal mining goes back thousands of years. It became important in the Industrial .. In much of Britain coal was worked from drift mines, or scraped off when it outcropped on the surface. Small groups ... Pierre-Francois Tubeuf laid the foundations of the modern industry in France, starting in 1770 in Languedoc.
when did mining start