W. Va. Code R. § 36-1-19

Current through Register Vol. XLI, No. 24, June 14, 2024

Section 36-1-19 - Emergency Communications Requirements

19.1. Each operator of a shaft and/or slope shall establish and maintain a communication system from the shaft and/or slope to the nearest point of medical assistance for use in an emergency.

19.2. The emergency communications system required to be maintained under Section 19.1. of this rule may be established by telephone or radio transmission or by any other means of prompt approved communications to any facility (for example, the local sheriff, the state police or local hospital) which has available the means of communication with the person or persons providing emergency medical assistance or transportation in accordance with the provisions of Section 19.1. of this rule.

19.3. Precautions shall be taken to prevent accidental discharge of electric blasting caps from current induced by mobile transmitters. The following precautions are recommendations of the Institute of the Makers of Explosives Publication No. 20, shall be complied with: Recommended Distances for One Ohm Electric Detonators from RF Sources such as Fixed and Mobile Transmitters, Including Cellular Telephone Service, Amateur Radio and Citizens' Band

Recommended Distances for One Ohm Electric Detonators from RF Sources such as Fixed and Mobile Transmitters, Including Cellular Telephone Service, Amateur Radio and Citizens' Band

MINIMUM DISTANCE (Feet)

Transmitter1 Power (Watts)	MF 1.7 to 3.4 MHz Fixed, Mobile, Maritime	HF 28 to 29.7 MHz Amateur	VHF 35 to 36 MHz Public Use 42 to 44 MHz Public Use 50 to 54 MHz Amateur	VHF 144-148 MHz Amateur 150.8-161.6 MHZ Public Use	UHF 450 to 470 MHz Public Use Cellular Telephones above 800 MHz
1	15	47	37	12	8
3	25	81	64	21	14
5	33	105	82	27	18
10	46	148	116	38	25
50	102	331	259	85	55
100	144	468	366	120	78
1802	193	627	491	161	104
200	204	661	518	170	110
250	228	739	579	190	123
5003	322	1,045	818	268	174
6004	353	1,145	897	294	190
1,000	455	1,478	1,157	379	245
1,5005	557	1,810	1,417	464	300
10,0006	1,438	4,673	3,659	1,198	775

Recommended Distances for One Ohm Electric Detonators from Citizens Band, Class D Transmitters 26.965 MHz (Channel 1) 27.405 MHz (Channel 40)

	Recommended Minimum Distance
Type	Hand-Held	Vehicle-Mounted
Double Sideband - 4 Watts Maximum Transmitter Power	5 feet	65 feet
Single Sideband -12 Watts (Peak Envelope Power)	20 feet	110 feet

¹Power delivered to the antenna.

²Maximum power to two-way mobile units in VHF (150.8 or 161.G MHz range) and for two-way mobile and fixed station units in UHF (450 to 460 MHz range).

³Maximum power for major VHF two-way mobile and fixed station units in 35 to 44 MHz range.

⁴Maximum power for two-way fixed station units in VHF (150.8 to 161.6 MHz range).

⁵Maximum power for amateur radio mobile use.

⁶Maximum power for some base stations in 42 to 44 MHz band and 1.6 to 1.8 MHz band.

Note, this chart is found in the Institute of the Makers of Explosives publication No. 20, December 2011.

W. Va. Code R. § 36-1-19