THOMAS F. TOMB, PAULS. PAROBECK, and ANDREW J. GERO Pittsburgh Health Technology Center, Mine Safety and Health Administration was greater than five percent. Such a formula was developed and is included in Parts 70.101, 71.101, and 90.101 of Title 30, Code of Federal Regulations (CFR). These regulations state that: "When the respirable dust in the mine atmosphere of the active workings contains...

A priority issue within coal mines is ensuring the safety of underground personnel. It is vitally important to have upto-date information about: which districts personnel are working; if there is adequate provision of safety equipment and facilities, and whether the mine enviroment is hazardous. This paper canvasses recent developments in proximity identification and tracking techologies for mi...

Lighting condition is very critical to mine workers, since they completely depend upon visual indication. Effective lighting systems provide better visibility and contribute to improved safety, production, productivity and efficiency of equipments. This paper intended to present a simulation study of configurations for the uniform illumination over a rectangular-target surface (underground mine...

This chapter describes the adverse health effects associated with exposure to respirable coal mine dust. Epidemiological studies of underground and surface coal miners in the United States and other countries are discussed. Also discussed are animal studies that add to our understanding of particle deposition and retention in the lungs and associated disease responses. This chapter emphasizes s...

Seismic acquisition and monitoring system can collect, store, analyze and dispose the rock burst seismic waves or the vibration of other objects. This paper utilizes single chip computer technology, virtual instrument technology, sensor technology, database management technology, wavelet analysis technology, combining the real condition of the mine microseismic signal to establish a set of mine...

Coal seams ascending mining technology is very significant, since it influences the safety production and the liberation of dull coal, speeds up the construction of energy, improves the stability of stope, and reduces or avoids deep hard rock mining induced mine disaster. Combined with the Xiaoming ascending mining mine 4-1, by numerical calculation, the paper analyses ascending mining 4-1 fact...

in advance longwall mining, the safety of mine network, production rate, and consequently, economic conditions of a mine are dependent on the stability conditions of gate roadways. the gate roadway stability is a function of two important factors: 1) characteristics of the excavation damaged zone (edz) above the gate roadway and 2) loading effect due to the caving zone (cz) above the longwall w...

The RFID-based positioning equipment, which is widely used in mine operation such as coal mine, has the advantages of low cost and maturity. It can locate human effectively so that it could improve the production safety situation and provide guarantee for disaster prevention and relief. However, the traditional RFID technology has the drawbacks of small monitoring range and no orientation which...

In order to reliably monitor the operating status of one-way aerial ropeways for underground mine and better guarantee the safety of mine personnel, a hierarchical routing protocol based on energy efficiency and chain-type structure is proposed in this paper. Previous studies show that uniform cluster formation can prolong the lifetime of network. So a novel time allocation algorithm based on t...