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ASSA ABLOY is making a huge splash at this year’s ISC West here in Las Vegas from April 9-11, showcasing new companies and featuring new products, with the theme – Together, We...
A variety of coal room and pillar mining methods have been efficiently practiced at depths of up to 500 m with least strata mechanics issues. However, for the first time, this method was trialled at depths of 850–900 m in CSM mine of Czech Republic. The rhomboid-shaped coal pillars with acute corners of 70°, surrounded with 5.2 m wide and 3.5–4.5 m high mine roadways, were used. Pillars were developed in a staggered manner with their size variation in the Panel II from 83 m × 25 m–24 m × 20 m (corner to corner) and Panel V from 35 m × 30 m–26 m × 16 m. Coal seam inclined at 12° w...
By trusting their castmates and an ancient story, students took a leap of faith, channeled their grief, and began to heal.