The short videotapes in this segment show the evolution of a combination of a waterjet and a suction line as a way of easily removing soil or sand relatively quickly. It is a subject covered in an earlier post. These video clips show some of the tests that helped us to develop that design. As […]
Tag Archives: Removal
09
Jul
Jul
When I began writing about hole cutting and drilling, a month ago, I was intending to talk just about the relative efficiencies of cutting the core into larger pieces, rather than designing a cutting pattern that would completely cover the surface of the excavation, milling and removing the core in fine particles. Other topics intruded, […]
July 7, 2015 Source: U.S. Energy Information Administration, based on the Mine Safety and Health Administration, the Office of Surface Mining Reclamation and Enforcement, and state agenciesNote: Production excludes refuse coal. Coal production data for 2014 are preliminary. Coal production from mines with mountaintop removal (MTR) permits has declined since 2008, more than the downward […]
Almost six weeks after the Senate Committee on Finance submitted its report on the allegation made by the former Governor of the Central Bank of Nigeria (CBN), Mallam Sanusi Lamido Sanusi, on the non-remittance of oil revenue to the Federation Account by the Nigerian National Petroleum Corporation (NNPC), the Senate yesterday deliberated on the report […]
