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DANGERS OF MINING

Teacher: Mr. Prussman
Horizontales
The process of restoring the land to its original or better condition after mining is completed is called _________. (454)
A poisonous gas that can kill mine workers is __________.(P1)
_____ mine drainage a type of water contamination is another negative impact by mining. (452)
Miners who operate on state land must obtain _______. (455)
Verticales
The smoke and gases released by burning coal fires deep underground can cause ______problems in humans. (454)
One of the most serious environmental consequences of coal mining are _______that start underground. (454)
The federal government has to spend billions of dollars in order to clean up _______mines. (451)
The sinking of regions of the ground caused by pillars collapsing in mines is called_________. (453)
Before a mining project can begin a mining company must post funds, called______. (455)
Mining is regulated by the establishment of ______. (454)