In the mid-1700s, the earliest area anthracite ... “There is a lot of heavy-duty electrical equipment underground — conveyor belts, mining equipment, lighting and other machinery use a lot ...

the start of underground mining, which—if all goes to plan—will allow for the survival of the 1,700-year-old Buddhist city. “Our long-term strategy on Mes Aynak foresees the full protection ...

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where mining dates to the late 1700s, coal was mined in nearly half of the state's 67 counties and there are at least 5,000 abandoned underground mines, leaving behind hazards that officials say ...

Mine subsidence has caused billions of dollars in damage in the U.S. In Pennsylvania, where mining dates to the late 1700s, coal was mined in nearly half of the state’s 67 counties and there are at ...

where mining dates to the late 1700s, coal was mined in almost half of the state's 67 counties and there are at least 5,000 abandoned underground mines, leaving behind hazards that officials say ...