=Percentage of fine coal.=
Sec. 978-3. When there is no agreement between the miner or loader of coal in any mine in this state and the operator thereof whereby the miner or loader is to be paid for mining or loading coal other than on the basis of the ton or other weight according to the total weight of all such coal contained within the car it shall be the duty of such miner or loader of coal and his employer to agree upon and fix, for stipulated periods, the percentage of fine coal commonly known as nut, pea, dust and slack allowable in the output of the mine wherein such miner or loader is employed. At any time when there shall not be in effect such agreed and fixed percentages of fine coal allowable in the output of any mine, said industrial commission shall forthwith upon request of such miner or loader or his employer, fix, such allowable percentage of fine coal, which percentage so fixed by said industrial commission shall continue in force until otherwise agreed and fixed by such miner or loader and his employer. Whenever said industrial commission shall find that the total output of such fine coal at any mine for a period of one month during which such mine shall have been operating while the percentage of fine coal so fixed by said industrial commission has been in force, exceeds the percentage so fixed by it, said industrial commission shall at once make, enter and cause to be enforced such order or orders relative to the production of coal at such mine, as will result in reducing the percentage of such fine coal, to the amount so fixed by said industrial commission.
Sec. 978-4. Said industrial commission shall, as to all coal mines in this state, which have not been in operation heretofore, perform the duties imposed upon it by the provisions hereof.
=Department of Industrial Relations may change percentage.=
Sec. 978-5. Said industrial commission shall have full power from time to time, to change, upon investigation, any percentage by it ascertained and determined or fixed, as provided in the preceding sections hereof.
=Unlawful to use screen.=
Sec. 978-6. It shall be unlawful for the employer of a miner or loader of the contents of any car of coal to pass any part of such contents over a screen or other device, for the purpose of ascertaining or calculating the amount to be paid such miner or loader for mining or loading such contents, whereby the total weight of such contents shall be reduced or diminished unless otherwise agreed between employer and miner or loader. Any person, firm or corporation violating the provisions of this section shall be deemed guilty of a misdemeanor and upon conviction, shall be fined for each separate offense not less than three hundred dollars nor more than six hundred dollars.
=Loading impurity; penalty.=