The objective of this thesis is to optimise the fragmentation at Boliden Minerals open pit mine Aitik. Blasting is one of the main operations in mining, and its performance has a major impact on the overall economy of the mine. The fragmentation process affects not only the local productivity and unit costs of the mining department. It also affects the performance of the subsequent comminution ...

The ENCOAL Corporation has shipped, to two utility customers, over, 500 rail cars (six partial trains and two full trains) of solid product’(PDF) from its plant located at Triton Coal Company’s Buckskin Mine near Gillette Wyoming. Shipments span a range of blends from 15% to essentially unblended PDF. Utility handling of these shipments is comparable to that of run-of-mine Buckskin coal. Result...

Shaft sinking is one of the main parts in underground mine planning. Shaft has various applications in underground mines e.g. minerals exiting flow, gases entrance or exit way, stope developments for exploitation etc. Considering that this section requires an abundance of expenses, management always following the election is the way that both terms have the technical considerations, economic co...

Field tests concerning a fog mesh method for fog removal are discussed. The first tests were performed at the Pyhäsalmi Mine, Finland. As this study gave promising results, further studies were completed at the Orivesi Mine. The results of these most recent field tests are presented and the two studies are compared. The Orivesi test set consisted of four materials. These included air filter fab...

Although Dahongshan Copper Mine, a subsidiary of Chinalco Co., Ltd., has large production scale, it is still non-ferrous metal underground mine with low mechanization and labor efficiency due to its early production. In recent years, mines have carried out number beneficial scientific explorations practices on safety management. According their own actuality, they combined They done meticulousl...

The mining industry is among the top ten industries nationwide with high occupational injury and fatality rates, and mine rescue response may be considered one of the most hazardous activities in mining operations. In the aftermath of an underground mine fire, explosion or water inundation, specially equipped and trained teams have been sent underground to fight fires, rescue entrapped miners, ...

P SY CHOSTIMU LANTS, par ticu larly ampheta mine, be came avail able in Amer ica for clini cal use in 1937, and since then have been widely prescribed. More re cently, their bene fi cial ef fects have been over shad owed by the rec og ni tion of a sig nifi cant abuse po ten tial. Nev er the less, the mili tary serv ices, par ticu larly the Air Force, have rec og nized the value of psy chostimu ...