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Coal. (True/False) Coal is a mineral. What is the lowest grade of coal? What is the highest grade of coal? What is the medium grade of coal? Which is safer, strip or deep mining? (True/False) Coal is mined in VA. (True/False) Coal is an igneous rock. What is the cleanest burning coal?.
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(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?
(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?
(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?
(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?
(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?
(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?
(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?
(True/False) Coal is a mineral. • What is the lowest grade of coal? • What is the highest grade of coal? • What is the medium grade of coal? • Which is safer, strip or deep mining? • (True/False) Coal is mined in VA. • (True/False) Coal is an igneous rock. • What is the cleanest burning coal?