Technically there are no union mining companies, only union miners working for mine companies. Within an individual company that owns several mines there may have both union and non-union workers because each particular mine in that company has the opportunity to join the union or choose not to - it's based on the mine workers' preference not the company's. Hobet's largest mine in Boone County, West Virginia is a union mine, and to the best of my knowledge all of Hobet's mines employ union workers.
Bonner Mining Company, located on Bonner County, Idaho, is listed as it is still in operations. However, the land status is listed as privately owned.
Pullman Company
It is a trade union for workers who do manual work. These would include people working in areas like mining, building, mechanical work, maintenance, repairs of technical equipment etc.
Glencore Xtrata is a multinational mining and commodity's trading company. The company was created on May 3, 2013 with the merger of Xtrata and Glencore.
No. Through various buy-outs and mergers, whatever remains of Union is somewhere in Pennzoil.
The company in the movie was the Pearson Mining Company.
Talvivaara Mining Company was created in 2004.
Maryland Mining Company ended in 1852.
Stillwater Mining Company was created in 1992.
The population of Aniche Mining Company is 15,000.
Milpo - Mining company - was created in 1949.
Western Mining Company was created in 2000.
Buenaventura - Mining company - was created in 1953.
Noranda - mining company - was created in 1922.
Noranda - mining company - ended in 2005.
Vale - mining company - was created in 1942.
Maryland Mining Company was created in 1836.