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Full-Text Articles in Mining Engineering
Pillar Design For St. Peter Sandstone Formation, Francis Anohomah Arthur
Pillar Design For St. Peter Sandstone Formation, Francis Anohomah Arthur
Doctoral Dissertations
"Silica sands produced primarily from St. Peter Sandstone are used for hydraulic fracturing in the petroleum industry, glassmaking, chemicals, ceramics, filtration and the foundry industry in the US. The recent high demand for silica sands for hydraulic fracturing has triggered increased production and commissioning of new silica sand mines to support natural gas production from shale and tight gas deposits in the US. Most mines use surface mining methods to extract St. Peter Sandstone. The room and pillar mining method has been successfully used for St. Peter Sandstone mining in a few US locations, however, no one has proposed a …
Microstructure And Geotechnical Properties Of St. Peter Sandstone In Clayton, Iowa, Amir Hossein Bagherieh
Microstructure And Geotechnical Properties Of St. Peter Sandstone In Clayton, Iowa, Amir Hossein Bagherieh
Doctoral Dissertations
"The St. Peter Sandstone is significantly different from the minerals and rocks which have been studied extensively in mining. It is brittle and characterized by an unusually high friction angle. On the other hand it is friable, and it is nearly cohesionless. The scarcity of the ground control techniques for this particular mining environment has created many difficulties for mine operators. This research aims to establish a fundamental understanding of the basic mechanical and strength properties of the St. Peter Sandstone for engineering design and scientific research. The specific objectives are 1) characterizing the strength of the St. Peter Sandstone, …