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Modified longwall mining with a German coal planer. Progress report 2: Completion of mining in three adjacent panels in the Pocahontas No. 4 coal bed, Helen, W. Va; If this photograph is used for publication, please give credit to the Bureau of Mines, United States Department of Interior.

181. Wood Crib Constructed with Crib Releases

Mechanic working on what appears to be a turbine.

182. Mechanic Working on Mining Machinery

A continuous miner in action.

183. Lee Norse CM28E Continuous Miner

Continuous miner in action.

184. Lee Norse CM28E Continuous Miner

185. Mechanic Working in the Mathies Underground Machine Shop

186. Interior of Mathies Underground Machine Shop

187. Oxen Pulling Coal Cart in an Underground Mine

188. Miners Operating a Cutting Machine at Consolidation Coal Company Mine No. 3

Man working in the Scarbro Mine Hoisting Room and Sub-Station, built in 1915-1916.

189. Scarbro Mine Hoisting Room and Sub-Station, Built 1915-1916

Four pictures showing the proper and wrong ways to scotch and clean under cages.

190. Safety Procedures for Scotching and Cleaning Under Cage

Five miners sitting in mine with their headlamps on.

191. Miners Sitting in an Underground Coal Mine

Miner standing in portal to Jamison No. 9.

192. Portal at Jamison No. 9 Mine