Pulmonary tuberculosis is relatively frequent in workers exposed to silica or a mixed dust containing silica (Marchand, 1972). This increased susceptibility has been shown in relation to silica itself (Hunter, i962),coal (Rivers, James, Davies & Thompson, 1957) and talc (Siegal, Smith & Grecnburg, 1943). Since graphite too contains a proportion of silica which is about 2 % in the purest commerc...

Radiological pneumoconiosis is common amongst coal-miners in County Durham, and in four collieries about 22% of men at work above and below ground had fairly well-marked lung changes of category 2 or more (McCallum and Browne, 1955). There are no reliable prevalence data for pneumoconiosis of coal-miners in the adjacent coalfield of Northumberland, but its mines are thought to produce little pn...

Water disaster is one of the five natural disasters in coal mines, and it badly threats the lives safety of miners. As well known, the main reason of evoked flooding is water conducted fractured zone in the coal seam. Based on the Maxwell equation, we try to study the relationship between apparent resistivity and stratigraphic dip as well as strata direction. The numerical results show that the...

This paper presents a low power, cost-effective, And Zigbee protocol based wireless sensor network that provides an intelligent surveillance and safety system for underground coal mines. The system consists of wireless connection of several nodes. Sensor node mainly consists of Zigbee protocol based low power CC2530 transceiver integrated with a high performance, low power microcontroller on si...

The underground workers in the Dutch coal-mines have been radiographed (70 mm.) seven times since 1949. The prevalence of coal-miners' pneumoconiosis shows a continuous decrease in all age groups. To evaluate the effect of the intensive system of dust suppression over this period a cohort analysis was made of the proportion ofmen with pneumoconiosis with the same number of years of exposure und...

STUDY OBJECTIVES To analyse long term effects of working conditions experienced at an advanced age, and after retirement by quantifying occupational strain, impairment, and disability to establish their interrelation. DESIGN Retrospective study. PARTICIPANTS Retired miners from The French Coal Board who had worked in the coal fields of the Loire valley. From a potential population of 507 re...

Enfi eld et al 3 at the University of Virginia also recently reviewed outcomes in 30 patients at multiple centers who underwent lung transplantation for severe CWP since 1987, using the database of the United Network for Organ Sharing. In the University of Virginia analysis, after account ing for age, lung allocation score, and type of transplant, 1-year survival after transplantation appeared ...