INDIAN GEOGRAPHY

Detailed explanation-1: -This is done by pneumatic powered rock drills. Due to this number of workers working on the shaft bottom is minimized. As a result many projects are depending on shotcrete for this temporary lining. Even robotic application of shotcrete is being considered.

Detailed explanation-2: -The method of collecting minerals from rocks buried under the earth’s crust is known as mining. Meanwhile, open-case extraction removes minerals from deeper depths by scraping the surface layer. Shaft mining, on the other hand, is the process of drilling deep holes, or shafts, to access mineral mines at great depths.

Detailed explanation-3: -In mining: Vertical openings: shafts and raises. The principal means of access to an underground ore body is a vertical opening called a shaft. The shaft is excavated, or sunk, from the surface downward to a depth somewhat below the deepest planned mining horizon.

Detailed explanation-4: -Uranium is excavated from open-pit or deep-shaft mines using conventional mining techniques (step 1 in the fuel cycle). The ore is crushed and the uranium is leached out using sulfuric acid or sodium carbonate and bicarbonate.

Detailed explanation-5: -Large Mining Trucks. To move materials around a mine site, workers need heavy-duty trucks. Hydraulic Mining Shovels. Large Dozers. Electric Rope Shovels. Rotary Drill Rigs and Rock Drills. Motor Graders. Large Wheel Loaders. Draglines. More items •25-Mar-2021