Coal mining - WikipediaCoal mining is the process of extracting coal from the ground. Coal is valued for its energy .. Strip mining exposes coal by removing earth above each coal seam. This earth is ... File:Make it Safer with Roof Screen.webm ... Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.wikipedia org wiki file strip coal mining,File:Strip coal mining.jpg - Wikimedia CommonsDec 9, 2016 . File:Strip coal mining.jpg . Strip_coal_mining.jpg (768 × 512 pixels, file size: 237 KB, MIME type: image/jpeg) . file: Usage on ar.wikipedia.
wikipedia org wiki file strip coal mining