Chapter 1. STATE MINE INSPECTOR

In all underground mines at least one sample shall be taken each year in exhaust mine air by a competent person to determine if concentrations of radon daughters are present. If concentrations of less than 0.1 WL are found: 1. Where uranium is not mined, no further exhaust mine a…

No employee shall be permitted to receive an exposure of radon daughters in excess of 4 WLM in any calendar year. Historical Note Former Rule 4:71; Amended effective August 18, 1980 (Supp. 80-4).

When radon daughters concentrations between 0.1 and 0.3 WL are found in an active working area, measurements representative of worker’s breathing zone shall be determined as follows: 1. Where uranium is not mined -- at least three months at random times until concentrations are b…

Smoking is prohibited where uranium is mined. Historical Note Former Rule 4:73.

Historical Note Former Rule 4:74; Repealed effective August 18, 1980 (Supp. 80-4).

A. No employee shall be permitted an exposure to noise in excess of that specified in the table below. Noise level measurements shall be made using a sound level meter meeting specifications contained in “American National Standard Specification for Sound Level Meters,” which is …

A. Persons repeatedly exposed to hot environments will be suitably trained to recognize heat disorders and to render first aid for heat disorders. B. Work requirements will be adjusted to reduce the risk of heat disorders. Historical Note Adopted effective April 7, 1976 (Supp. 76…

Employees operating equipment shall not allow unauthorized personnel to operate or ride on equipment to which they have been assigned. Historical Note Former Rule 5:01.

All employees shall use steps, handrails and/or grab irons when mounting and dismounting mobile equipment. Historical Note Former Rule 5:02.

Employees operating equipment shall take appropriate precautions to ensure that everyone is in the clear before starting machinery or moving equipment. Historical Note Former Rule 5:03.

Starting and stopping devices on all machinery and equipment shall be clearly marked and readily accessible. Historical Note Former Rule 5:04.

Guards shall be properly designed and sufficiently strong to provide the required protection and withstand the wear of normal operation. Historical Note Former Rule 5:05.

Mobile equipment shall be operated at a speed which will not endanger any person or property. Historical Note Former Rule 5:06.

Mobile equipment shall be secured against accidental movement whenever the equipment operator leaves the equipment. Historical Note Former Rule 5:07.

All equipment and parts of equipment shall be blocked or otherwise secured so that it cannot be accidentally moved while repair work is being performed. Historical Note Former Rule 5:08.

Cabs of mobile equipment shall be kept free of extraneous materials. Historical Note Former Rule 5:09.

A. Compressed-air receivers and other unfired pressure vessels shall be constructed, installed and maintained according to manufacturers recommendations; and B. Shall be inspected at regular intervals by a competent person, and a record of such inspection shall be made available …

Compressed air shall be bled from air tools and hoses not equipped with automatic air cutoff devices before disconnecting the hoses or leaving the tools unattended. Repairs involving the pressure system of compressors, receivers, or compressed-air-powered equipment shall not be a…

All mobile equipment utilizing air brakes shall have an operating air pressure gauge. Historical Note Former Rule 5:12.

Historical Note Former Rule 5:13; Repealed effective August 18, 1980 (Supp. 80-4).

Each compressed air receiver shall be equipped with a pressure gauge, a pop-off valve and a blow-off valve at its lowest point. Historical Note Former Rule 5:14.

All pipelines from air receivers shall be adequately supported. Historical Note Former Rule 5:15.

A quick-close type air valve shall be provided on each piece of pneumatic-powered loading, hauling, and dumping equipment. The valve shall be closed except when the equipment is being operated. Historical Note Former Rule 5:16; Former Section R11-1-516 repealed, new Section R11-1…

The air valves on the mucking machines must be kept in a closed position when the machine is not being used. Historical Note Former Rule 5:17.

Welding operations shall be shielded and properly ventilated. Historical Note Former Rule 5:21; Amended effective April 7, 1976 (Supp. 76-2). Amended effective August 18, 1980 (Supp. 80-4).

A. Moving parts such as gears, sprockets, or chain drive, head, tail and take-up pulleys, flywheels, couplings, shafts, fan inlets, and similar exposed moving machine parts which may be contacted by persons and which may cause injury to persons must be guarded. B. Guards at conve…

All air hoses with an inside diameter of 3/4 inch or larger shall have suitable safety devices set inside or attached to those hoses such that accidental disconnection will not flail hose ends. Historical Note Former Rule 5:23.

Men shall not work from or on a piece of mobile equipment in a raised position until it is blocked in place securely. This does not preclude the use of equipment specifically designed as elevated mobile work platforms. Historical Note Former Rule 5:24.