Experimental Mine, U.S. Bureau of Mines (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Experimental Mine, U.S. Bureau of Mines" in English language version.

refsWebsite

Global rank English rank

2web.archive.org

1^st place

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2,941^st place

2,021^st place

1popcitymedia.com

low place

low place

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14^th place

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archive.today

"Pittsburgh Tech Council". Archived from the original on 2013-11-20. Retrieved 2013-11-20.

cdc.gov

"NIOSH Mining". 24 October 2023.

doe.gov

netl.doe.gov

"About NETL". Archived from the original on 2008-12-20. Retrieved 2008-11-15.
"Home".

nps.gov

npgallery.nps.gov

"National Register Information System". National Register of Historic Places. National Park Service. April 15, 2008.

pghtech.org

"Pittsburgh Tech Council". Archived from the original on 2013-11-20. Retrieved 2013-11-20.

popcitymedia.com

http://www.popcitymedia.com/features/netl032410.aspx

popsci.com

Clements, M.E. (1927). "Uncle Sam's Toy Coal Mine". Popular Science (July): 36. Archived from the original on 2011-06-04. Retrieved 2010-03-07.

web.archive.org

"About NETL". Archived from the original on 2008-12-20. Retrieved 2008-11-15.
Clements, M.E. (1927). "Uncle Sam's Toy Coal Mine". Popular Science (July): 36. Archived from the original on 2011-06-04. Retrieved 2010-03-07.