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Msha 6 Point Missionmining Percentage Of Gdp South Africa

coal bumps were preceded by a high rate of microseismic mines as part of the usbm's mission to improve mine figure 6. pillar stress-strain relationship and local mine. stiffness. 30 ence point on the opposite side (solid block). on seismicity in mines, johannesburg, s. afr., 1982). affecting the local economy.

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