Sentence examples for mined ground from inspiring English sources

Oil shale is fossilized algae trapped inside rock that must be mined, ground up and heated to 900 degrees Fahrenheit to yield oil. Oil sands contain bitumen, a heavy black viscous oil that is extracted through open pit mining.

And in the year since the debt-ceiling vote, other reporters, notably Matt Bai of the New York Times, have mined the ground thoroughly for what nuggets remained.

This chapter summarizes recent advances in coal mine ground control technology and practice from the operator's perspective.

Engineering application indicates that maximum deformation of mining ground surface can be calculated and analyzed by the system.

This method could fill the gap of incomplete monitoring data in mine ground subsidence, and provide a reference for production in the metal mine.

Instability and failure mechanism of coal wall at coalface is one of the hot-button and difficult issues in the study of coal mine ground control.

While many ground control research programs have been carried out over the past 60 years from the mine operator's perspective, any new development in coal mine ground control technology can be segregated into two categories: output-oriented and outcome-oriented.

In order to know the maximum mining ground deformation of arbitrary surface point, directions of the maximum surface tilt, curvature, horizontal displacement and horizontal deformation caused by multi-working faces were deduced based on probability integral method.

The distribution forms of surface deformations in all direction ϕ∈[0, 2p] were obtained and also equations of maximum deformations were given based on calculation of mining ground deformation in direction ϕ.

To date, extensive studies in these areas have been carried out for various purposes such as mine ground control, water inrush prevention, and gas control, respectively.

The samples were stored in polyethylene bags after mining, ground in porcelain mortars, sieved to particle sizes of 0.1 2.5 mm, demineralized with HCl 0.5 N for 6 h, rinsed with distilled water until the pH of the resulting rinsing water was >6, and dried at 105 °C for 2 h.