Dust to Be Controlled in Preparation Plants, Washeries, etc

Section 406. Dust to Be Controlled in Preparation Plants, Washeries, etc.--In all preparation plants, washeries, tipples and coal breakers where the coal dust is so dense as to be injurious to the health of persons employed therein, the operator or superintendent shall, upon the request of the inspector, immediately adopt measures for the removal of the dust as far as practicable.