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Quantitative assessment of the flows of materials from resource extraction to final disposal informs resource policy, energy planning, environmental science, and waste management. This article reports the worldwide technological cycle of zinc for 1994. Of the 7,800 kt of zinc contained in ore mined worldwide, 17% was lost in conversion to metal and another 17% lost or recycled in fabrication and manufacturing...
Marone et al. used a servo-controlled pressure intensifier coupled with an LVDT to record volume changes necessary to maintain a constant pore pressure within simulated fault gouge in a shearing apparatus. Volume strain can also be measured using radial strain gauges mounted directly on the specimen, but this approach only measures local changes in the radial section of the deforming sample. A new...
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