Which of the following statements are true/false?<br>1. No person shall be allowed to work in a mine who has already been working in any other mine within the preceding ten hours.<br>2. The Central government has the power to constitute mining board for any group or class of mines, who enjoy the power equivalent to the certifying inspector.<br>3. The workers will be granted a certificate of fitness from certifying surgeon and it shall be valid only for a period of twenty four months.<br>4. Inevery mine where more than five hundred persons are employed, ambulances and stretchers need to be readily available.

Correct Answer: 2, 4 are true and 1, 3 are false