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Full-Text Articles in Engineering
Wall Control Blasting At The Orphan Boy Mine – Butte, Montana, Jewel Sakyi
Wall Control Blasting At The Orphan Boy Mine – Butte, Montana, Jewel Sakyi
Graduate Theses & Non-Theses
Blasting is often conducted to produce desirable fragment sizes to minimize production cost and energy consumption in downstream processes, including loading, hauling, and crushing. However, the venting of explosive energy in the rock formation sometimes causes unwanted damage beyond the desired perimeter of the blast area. Control blasting has mainly been used in surface mining operations to minimalize blast damage. To explore the applicability of control blasting in underground mining operations, protect the safety of students, faculty, and staff, prevent overbreak, and to ensure the stability of openings and workings, four experimental control blasts, comprising of three smooth blasts and …
Total Cost Optimization For Contour Blasting In The Appalachia Region, Brett Christopher Jackson
Total Cost Optimization For Contour Blasting In The Appalachia Region, Brett Christopher Jackson
Theses and Dissertations--Mining Engineering
This thesis recounts the study of contour blasting practices in the Appalachia coal region. Contour blasting practices vary widely and problems are often encountered. Several different sites were visited and contour blasting practices at each were studied. Based on the information gathered, a comprehensive plan was developed for blasting operations to follow and then was tested and compared to an example of blasting practices without use of the plan. The blasting practices were compared by examining monthly production rates as well as a time study to measure the efficiency a contour blast could be loaded and hauled away and a …