CH12-Mining-gpoe

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What is the primary purpose of logging in the context of mining?

To maintain a record of core samples for future reference (correct)
To establish a geological and assay database for reserve estimation
To determine the quality of the ore
To prepare a bench-wise excavation plan for targeted production

What is the prime requirement in loading and dispatch management?

Managing loading and dispatch within the free time without incurring demurrages (correct)
Meeting the production targets
Optimizing the number of loading equipment
Reducing the penal freight charges

What is the main objective of bench-wise excavation planning?

To minimize overburden removal and reduce costs
To ensure a consistent quality of ore dispatched to the steel plant (correct)
To maximize ore production without considering quality
To comply with DGMS regulations for mine surface planning

Who is responsible for ensuring the safety of persons and equipment in mines?

Statutory persons specially deployed as per DGMS guidelines (A) Signup and view all the answers

What is the purpose of sending ore samples to the laboratory for quality analysis?

To determine the average quality of the ore body (C) Signup and view all the answers

What is the purpose of water sprinkling in mines?

To suppress airborne dust at the place of formation (C) Signup and view all the answers

What is the significance of maintaining bench parameters such as height, width, and gradient in mine surface planning?

To ensure compliance with DGMS regulations (C) Signup and view all the answers

What is the main objective of following the general principles laid down in permission letters by the DGMS?

To ensure the safety of persons and equipment (A) Signup and view all the answers

What is the ultimate goal of preparing a mine plan and schedule in the context of mining?

To produce targeted quantities of ore with stipulated quality (D) Signup and view all the answers

What should be kept at a safe distance during blasting to avoid damage?

All equipment, including Excavators, Dozers, and Drills (A) Signup and view all the answers

Which mineral is most often found in blue, but can also be found in brown, pink, yellow, green, and violet?

Apatite (A) Signup and view all the answers

What is the primary purpose of core drilling in exploration?

To determine the thickness of the ore body (D) Signup and view all the answers

What is the hardness of emerald and aquamarine?

8 (C) Signup and view all the answers

What is the name of the mineral that is an inspirational stone and develops psychic abilities and spiritual attunement?

Apatite (C) Signup and view all the answers

What is the most common mineral found on the surface of the Earth?

Quartz (B) Signup and view all the answers

What is the primary consideration in the economic processing of various ores?

Physical properties of minerals (D) Signup and view all the answers

What is the term for the sequence of stages involved in mining, including prospecting and restoration?

Mining sequence (C) Signup and view all the answers

What determines whether a rock is considered an ore or not?

The percentage of metal or valuable in the ore (A) Signup and view all the answers

What is essential to understand in order to develop mines?

The geology of the area (A) Signup and view all the answers

What is an ore, in terms of minerals?

An aggregation of minerals from which a metal or metallic compound can be recovered economically (D) Signup and view all the answers

What is the primary purpose of sub-grade drilling in blasting operations?

To compensate for drilling loss after the drill is removed (B) Signup and view all the answers

What is the recommended minimum length of the hole in relation to the height of the bench for good blasting?

At least 10% greater than the height of the bench (A) Signup and view all the answers

What is the general rule of thumb for determining the burden of drill holes in relation to the diameter of the holes?

200 to 300 times the diameter of the holes (D) Signup and view all the answers

What is the purpose of marking holes on the surface in a square pattern or staggered pattern?

To ensure uniform blasting (A) Signup and view all the answers

Why is it necessary to have larger spacing and burden in soft rocks?

Because soft rocks require less energy for breaking (D) Signup and view all the answers

What is the primary purpose of maintaining a drilling block of sufficient length and width in mine production faces?

To ensure efficient drilling and blasting operations (D) Signup and view all the answers

What is the significance of drilling parameters in mine blasting operations?

To ensure effective drilling parameters based on rock characteristics (A) Signup and view all the answers

What is the purpose of marking drill hole positions on the ground prior to drilling operations?

To ensure accurate drilling and blasting operations (B) Signup and view all the answers

What is the main advantage of using excavator-dumper combinations in mine excavation and transport operations?

Increased capacity and flexibility in material transport (A) Signup and view all the answers

What is the primary purpose of using big water sprinklers in mines?

To suppress dust and prevent respiratory problems (C) Signup and view all the answers

What is the primary consideration in creating a daily operation schedule in mining?

Ensuring quality parameters and targeted production (B) Signup and view all the answers

What is the benefit of using Site Mixed Emulsion (SME) Explosive in mining operations?

It reduces production costs and improves transportation safety (D) Signup and view all the answers

What is the purpose of monitoring bench-wise shovel operation during a shift?

To ensure quality parameters are met (A) Signup and view all the answers

What is the significance of removing extraneous materials before blasting an ore body?

To ensure quality parameters are met (A) Signup and view all the answers

What is the primary purpose of arranging transportation in mine operations?

To improve transportation safety (A) Signup and view all the answers

What is the benefit of crushing ore at the primary crusher in a mining operation?

It enhances the quality of the extracted ore (B) Signup and view all the answers

What is the primary objective of scheduling deployment of shovels in a shift?

To ensure quality parameters are met (C) Signup and view all the answers

What is the significance of synchronizing available bench-wise blasted material quality and quantity in a mining operation?

It ensures quality parameters are met (B) Signup and view all the answers

What is the primary purpose of bench-wise quality excavation monitoring?