§ 570.53 Coal-mine occupations (Order 3).

(a) Finding and declaration of fact. All occupations in or about any coal mine, except the occupation of slate or other refuse picking at a picking table or picking chute in a tipple or breaker and occupations requiring the performance of duties solely in offices or in repair or maintenance shops located in the surface part of any coal-mining plant, are particularly hazardous for the employment of minors between 16 and 18 years of age.