Transportation and Mining 18811920 National Park Service
From 1915 to 1920 the mining industry in southwestern Colorado saw a brief resurgence when the value of all metals produced rose thirty per cent due to the increased production of zinc. The Ute and Ulay Mines outside Lake City produced considerable low grade ore containing large quantities of zincblende.
Stone Staffordshire Wikipedia
Stone is a market town and civil parish in Staffordshire England 7 miles 11 km north of Stafford 7 miles 11 km south of StokeonTrent and 15 miles 24 km north of Rugeley. It was an urban district council and a rural district council before becoming part of the Borough of Stafford in 1974.
Coal Metallic and Mineral Resources WA DNR
The Metals Mining and Milling Operations Act chapter 78.56 RCW passed in 1994 established a regulatory scheme that is specific to metal mining. Mines included under the Metals Mining and Milling Operations Act are defined as operations mining base or precious metals and processing the ore by treatment or concentration in a milling facility.
Dundas 39 Archibald Mill Represents Minnesota 39s 39Earliest Industry 39
DUNDAS Minn. WCCO For more than a century mill ruins in Rice County have stood tall and for good reason. In Finding Minnesota John Lauritsen shows us how the history of the Archibald
North American Industry Classifi ion System NAICS U.S
Introduction to NAICS. The North American Industry Classifi ion System NAICS is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting analyzing and publishing statistical data related to the U.S. business economy.