Coalmining

Aluminium coatings are not favoured in atmospheres containing explosive mixtures because contact with rusty steel can cause incendiary sparking, and for this reason aluminium coatings are not used for protection of structures in coalmines (cf. CP 2008 1966). 

In the mid-1930s, George Orwell visited working-class communities in northern England and wrote about the conditions that he witnessed. In his book The Road to Wigan Pier. He describes a visit to a coalmine the section devoted to the walk from the mineshaft to the coalface is presented here. It makes it very clear why the energy expenditure involved in these activities is very high. 

The failure of detonation of coalmining explosives in bore-holes, discussed... 

A method of calculation of heats of combustion used in Russia in conjunction with determination of permissibility of coalmining explosives is described by Bandurin Rukin (Ref 42a) and also in this Encycl, Vol 3, pp C447 to C450... 

Y. Matsuguma et al, Combustion Preventive Chemicals for Coalmine Explosives. 

Grimshaw, P. N. 1992. Sunshine Miners. Opencast Coalmining in Britain, 1942-1992. British Coal Opencast, Mansfield, Notts, 113 pp. 

Jones, T., Blackmore, P., Leach, M., Berube, K., Sexton, K. Richards, R. 2002. Characterisation of airborne particles collected within and proximal to an opencast coalmine South Wales, U.K. Environmental Monitoring and Assessment, 75, 293-312. 

Love, R. G., Miller, B. G. et al, 1997. Respiratory health effects of opencast coalmining A cross sectional study of current workers. Occupational and Environmental Medicine, 54, 416-423. 

Louviers Works, built in 1908 at Louviers, Colorado, 20 miles south of Denver, has been supplying expls for gold, silver, uranium, zinc and potash mines also for tunnel construction, seismic prospecting and coalmining. It closed in June 1971... 

Patent Fuel.—In moBt of the operations of coalmining, os also in coking establishments, much refuse accumulates which is frequently very rich in combustible matter but owing to Its being in small dust or powder, it cannot be used in the furnaoe by itself, A similar waste attends the manufacture of wood and peat charcoal, and without the aid of some cohesive matter, this considerable portion of the original fuel becomes useless. 

Cliffite and Super-Cliffite. Cliffite was a coalmine expl made by Curtis Harvey, and formerly on the Permitted List NG 47, CC (collodion cotton) 3 starch 50%. Super-Cliffites were of different compns No 1 - NG 9-5> CC 0.5 AN... 

In the region of coalmines the installation could be built where part of the yield coal could be processed on methanol and it can be used as a carrier... 

Wang X, Yano E, Nonaka K, et al. 1997. Respiratory impairments due to dust exposure A comparative study among workers exposed to silica, asbestos, and coalmine dust. Am J Ind Med 31 495-502. 

VI. Migliest safety pennitted explosives in particularly dangerous coalmines (Table 97). 

Caplan A (1953) Certain unusual radiological appearances in the chest of coalminers suffering from rheumatoid arthritis. Thorax, 8 29-35. 

Banks DE, Bauer MA, Castellan RM and Lapp NL (1983) Silicosis in surface coalmine drillers. Thorax 38 275-278. 

Ground surface subsidence is also an important environmental issue in mining industry. Liu et al. (1999) reported a numerical study on ground surface deformation and subsidence due to water drainage in a large-scale open-pit coalmine, using random media theory, Markov Chain principles and superposition techniques. The predicted and the... 

Based on the geological structure of Qishan coalmine in Xuzhou, this paper had simulated the horizontal contacted roadway in north wing track which lied in the depth of -1000 m. This roadway which is the main development roadway has the length of 650 m. To the north, it contacts with -850—1000 downhill of the north wing track. To the south, it links the -850 downhill of the contacted track. According to the geological profile, the -1000 contacted roadway of horizontal north... 

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