Heartsaver First Aid Part I
Progress Indicator:
 
Question 4 of 22
4. The operator or superintendent at each mine shall cause to be made, by registered mining engineers, or a registered professional surveyor, an accurate, professional quality map of the mine, on a scale not less than _______ feet to the inch. (Section 224)
Choices:
- 50
- 500
- 200
- 300
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