YouTube Virtual Tour of Black Thunder Coal Mine

Harnessed water power at a grist mill.

Lightning Protection

Badger Mine (WI)

Bonne Terre Mine (MO)

Hurstville Lime Kilns (IA)

Joliet Iron Works (IL)

Mining in Platteville (WI)

Missouri Mines Historic Site (MO)

St. John Mine (WI)

Salt Mine in Wieliczka, Poland

Smith Lime Kiln and Limestone House (NE)

Weldon Spring Disposal Site (MO)

Various images below:

After looking at Big Brutus below, the largest Electric Shovel in the world, visit him at http://www.bigbrutus.org/