Results 81 to 90 of about 5,034 (157)

Conservation of mechanical energy in flexible body friction in unit [PDF]

open access: yes, 2017
Приведены результаты экспериментальных исследований трения гибкого тела по блоку. Впервые установлено, что при трении гибкого тела по блоку соблюдается закон сохранения механической энергии, а также получено новое уравнение трения гибких тел и условие ...
Lubenets, N.   +4 more
core  

Analysis of Fall-Related Imminent Danger Orders in the Metal/Nonmetal Mining Sector. [PDF]

open access: yesMin Metall Explor, 2020
Hrica JK   +4 more
europepmc   +1 more source

Mining nonterrestrial resources: Information needs and research topics [PDF]

open access: yes
An outline of topics we need to understand better in order to apply mining technology to a nonterrestrial environment is presented. The proposed list is not intended to be complete.
Daemen, Jaak J. K.
core   +1 more source

The role of the GPS-system in integrated control system skylines in mine for copper Bucim [PDF]

open access: yes, 2011
With the hastily ascent of the techniques at the end of 20th century, the role of the GPS systems rapidly increases in all fields of technologies prevalent on the surface layer and hence in open-cut mining.
Cekerovski, Todor   +2 more
core  

Electricity in Mining [PDF]

open access: yes, 1889
Also included in this item is a discussion of C. W.
Jenks, C. W.
core  

Some technical characteristics of shaft hoist machines installed in the shafts of Macedonian lead and zinc mines

open access: yes, 2012
The shafts hoisting plants that are installed in the shafts of Macedonian lead and zinc mines have tremendous importance for past work of the mines and represent a crucial link between underground production system and mineral processing plants. From their further operation depends on achieving the planned production capacity and profitability of the ...
Despodov, Zoran   +2 more
openaire   +2 more sources

Report of activities of the advanced coal extraction systems definition project, 1979 - 1980 [PDF]

open access: yes
During this period effort was devoted to: formulation of system performance goals in the areas of production cost, miner safety, miner health, environmental impact, and coal conservation, survey and in depth assessment of promising technology, and ...
Isenberg, L., Lavin, M. L.
core   +1 more source

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