NECTAR INSTRUMENTATION LLP Interview Questions and Answers

ANFO (Ammonium Nitrate Fuel Oil) is commonly used in solid blasting due to its stability and effectiveness.

• ANFO (Ammonium Nitrate Fuel Oil) is a commonly used explosive in solid blasting operations.

• It is a mixture of ammonium nitrate and fuel oil, providing a stable and powerful explosive.

• ANFO is preferred for its cost-effectiveness and ease of handling in mining and construction industries.

There are two main types of explosives: high explosives and low explosives.

• High explosives: detonate with a supersonic shock wave, examples include TNT, C-4, and RDX

• Low explosives: deflagrate at a subsonic speed, examples include black powder and smokeless powder

VOD stands for Vertical Opening Distance, which is a measurement used in mining engineering.

• VOD is the vertical distance between two levels in a mine.

• It is an important factor in determining the efficiency of ventilation systems in underground mines.

• VOD can impact the safety and productivity of mining operations.

• Example: A mining engineer must calculate the VOD to ensure proper airflow and ventilation in the mine.

• Example: Increasing the VOD can help improve air quality and re...read more

Solid blasting is a method used in mining to break up solid rock using explosives.

• Solid blasting involves drilling holes into the rock, filling them with explosives, and detonating them to break up the rock.

• It is commonly used in mining operations to extract minerals and ores from the earth.

• The size and placement of the blast holes, as well as the type and amount of explosives used, are carefully calculated to ensure safe and efficient blasting.

• Solid blasting can create large...read more

Mining is the process of extracting valuable minerals or other geological materials from the earth.

• Mining involves digging, drilling, and blasting to access ores or minerals.

• It can be done underground or in open pits.

• Various methods are used such as surface mining, underground mining, and placer mining.

• Examples include coal mining, gold mining, and diamond mining.