This article forms pan of an ongoing study of the coal and coalbed methane resource potential of northwestern British Columbia. Other areas under study include the Bower basin coalfield, Telkwa coalfield and Tertiary coalfields of the Bulkley Valley. Tertiary sediments survive in many major watersheds in British Columbia. The sediments are generally not well consolidated, poorly exposed and the...

The Xishan coalfield is an important coking coal-producing area in China. No. 8 and 9 coals of the Taiyuan formation were sampled tested from nine mines center north coalfield, coal’s quality characteristics, element occurrence enrichment sedimentary environment characteristics analyzed to provide a foundation for clean efficient coal utilization identification associated resources. results obt...

The Yangquan coalfield is one of the typical highly gassy mining areas in China. However, its coal seams are of lower permeability, which are not conductive to coalbed methane (CBM) drainage. In this study, based on the theory of the ground movement, we analyzed the principle of coal and CBM coextraction in the Yangquan coalfield, and established the technology system of coal and CBM coextracti...

sampling and desorption testing of fresh coal samples obtained from companies conducting exploration throughout the province. In addition methane adsorption isotherm tests arc: performed on some samples. During the summer of 1992 a project was undertaken to test coal seams intersected in the ongoing Manalta Coal Limited drilling program in the Telkwa coalfield. On-sitc activities consisted of t...

British Columbia exports about 25 million tonnes per year of metallurgical coal from two coalfields, which follow the Rocky Mountains along the eastern edge of the Province. In the north there are two mines in the Peace River coal&Id and in the south, five mines in the east Kootenay coalfields (Figure I). The east Kootenay coalfields are divided into the Elk Valley, Crowsnest and Flathead field...

This study is part of the Coal Quality project, and involves washability characteristics of British Columbia coals. The first two parts of the project involved collection and analysis of washability data from assessment reports (Holuszko and Grievr:, 1990; Holusrko, 199 I ). The washability characteristics of coals from different regions, geological ftwmations and seams were studied wing classi...

The routine chest radiographs of more than 21,000 miners from 23 unselected collieries in the East Midlands have been used for a study of rheumatoid pneumoconiosis and progressive massive fibrosis (P.M.F.). A broadened radiological concept of rheumatoid pneumoconiosis was used in diagnosis. The prevalence of simple pneumoconiosis categories 1, 2, and 3 was 5-5%, and of P.M.F. 059%. There were 5...