Which class applies to mines employing not less than 50 underground and 75 surface, to not more than 150 underground and 250 surface?

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Prepare for the Mine Safety DAO 2000-98 Test. Study with flashcards and multiple-choice questions, each with hints and explanations. Get ready to pass!

Multiple Choice

Which class applies to mines employing not less than 50 underground and 75 surface, to not more than 150 underground and 250 surface?

Explanation:
Classification of mines is based on the number of workers underground and on the surface to determine the appropriate safety and regulatory requirements. The described range—at least 50 underground and 75 surface, up to no more than 150 underground and 250 surface—defines a mid-size operation. That range corresponds to Class B. Larger operations with more workers would fall into the higher class, while smaller operations with fewer workers fit the lower classes. So the given range fits Class B.

Classification of mines is based on the number of workers underground and on the surface to determine the appropriate safety and regulatory requirements. The described range—at least 50 underground and 75 surface, up to no more than 150 underground and 250 surface—defines a mid-size operation. That range corresponds to Class B. Larger operations with more workers would fall into the higher class, while smaller operations with fewer workers fit the lower classes. So the given range fits Class B.

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