View of a sign on the property of the Henderson Molybdenum Mine (a subsidiary of Freeport-McMoRan Copper & Gold Inc.) near Empire (Clear Creek County), Colorado. The sign reads: " WARNING Explosives are used for avalanche control in this area....
Freeport-McMoRan Copper & Gold Inc.--Facilities--2010-2020.; Henderson Mine (Clear Creek County, Colo.)--2010-2020.; Clear Creek County (Colo.)--2010-2020.; Signs (Notices).; Freeport-McMoRan Copper & Gold Inc.--Pictorial works.; Signs and...
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