(2) 1[ The Central Government may, by general or special order and subject to such restrictions as it may think fit to impose, authorise the Chief Inspector or any other authority to exempt, subject to any specified conditions, any mine or part thereof from the operation of any of the provisions of the 4[ regulations rules or bye- laws] if the Chief Inspector or such authority is of opinion that the conditions in any mine or part thereof are such as to render compliance with such provision unnecessary or impracticable.]