293.390. Standards for roof control--supply of materials required (coal mines).
Standards for roof control--supply of materials required (coalmines).
293.390. 1. The operator of every coal mine shall compileor have compiled a set of minimum standards for systematic roofcontrol suitable to the roof conditions and mining system of hismine. After written approval by the director, the minimumstandards shall be placed in effect and complied with byemployees and officials, and additional supports shall beinstalled wherever it is necessary to afford adequate protection.
2. At all coal mines, the operator shall provide an amplesupply of timber and cap pieces or wedge of proper size,roof-bolting materials, or other proper devices with which tosecure all places in a safe manner.
(L. 1959 S.B. 188 § 44)