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I applied via Walk-in and was interviewed before Feb 2023. There was 1 interview round.
The types and grades of ores in a mining operation are determined by their composition and quality.
Ores can be classified into various types based on their mineral composition, such as iron ore, copper ore, gold ore, etc.
The grade of an ore refers to the concentration of valuable minerals or metals in the ore, usually expressed as a percentage.
Different types of ores can have different grades, for example, high-grade i...
posted on 25 Nov 2023
posted on 30 Aug 2024
I applied via Campus Placement and was interviewed before Aug 2023. There were 3 interview rounds.
Paper was of medium range
I have always been fascinated by the mining industry and the opportunity to work on projects that have a significant impact on society.
Passionate about geology and engineering
Enjoy problem-solving and working in challenging environments
Excited about the potential to contribute to sustainable resource extraction
Inspired by the innovation and technology advancements in the mining sector
Your company is a leading mining company with a strong focus on sustainability and innovation.
Your company has a long history in the mining industry, with expertise in various minerals and metals.
You prioritize safety and environmental responsibility in all mining operations.
Your company invests in research and development to improve mining techniques and reduce environmental impact.
You have a strong track record of co...
I applied via Walk-in and was interviewed in Feb 2022. There were 2 interview rounds.
The suitable bench height for a 2cu.m shovel depends on various factors such as the type of material being mined and the equipment used.
The bench height should be determined based on the reach and capacity of the shovel.
It should allow for efficient loading and dumping of material.
The bench height should also consider the stability and safety of the mining operation.
Factors like the type of material, equipment limitati...
The maximum width of the gallery in Indian coal mines varies depending on the specific mine and its regulations.
The maximum width of the gallery is determined by safety regulations and guidelines set by the Indian government.
Different coal mines may have different maximum width requirements based on factors such as the type of coal being mined, the depth of the mine, and the mining method used.
For example, in undergrou...
The maximum length of the trailing cable depends on various factors such as power requirements, voltage drop, and safety regulations.
The length of the trailing cable is determined by the distance between the power source and the equipment it needs to supply.
Power requirements of the equipment play a role in determining the maximum length of the cable.
Voltage drop, which can affect the efficiency of power transmission, ...
Detonating fuse consists of a core
The core of a detonating fuse is the central part that initiates the explosion
The core is typically made of a highly reactive material, such as a mixture of powdered metals or chemicals
The core is surrounded by a protective casing to prevent accidental ignition
Examples of core materials include lead azide, mercury fulminate, or PETN
The VOD of detonating fuse is the velocity at which the detonation wave travels along the fuse.
VOD stands for Velocity of Detonation.
It is a measure of how fast the detonation wave propagates through the fuse.
The VOD of a detonating fuse depends on factors such as the type of explosive used and the composition of the fuse.
A higher VOD means the detonation wave travels faster, resulting in a quicker explosion.
Different ...
The priming charge in a detonator is the initial explosive charge that initiates the main explosive charge.
The priming charge is a small amount of explosive material that is sensitive to heat, shock, or friction.
It is designed to ignite quickly and reliably to initiate the main explosive charge.
The priming charge is usually contained within a small metal or plastic capsule.
Examples of priming charges include lead azide...
A sheathed explosive is coated with a protective covering.
The sheath provides a layer of protection to the explosive material.
The sheath can be made of materials like plastic or rubber.
The purpose of the sheath is to prevent accidental ignition or detonation.
Examples of sheathed explosives include dynamite and blasting caps.
The gelling agent in slurry explosive is typically a mixture of water and a thickening agent.
The gelling agent is used to increase the viscosity of the explosive mixture.
Common thickening agents used in slurry explosives include guar gum, carboxymethyl cellulose (CMC), and xanthan gum.
The gelling agent helps to suspend solid particles in the explosive mixture, allowing for better distribution and control of the explosi...
The VOD of emulsion explosive refers to its Velocity of Detonation.
VOD is a measure of how fast the explosive reaction propagates through the material.
It is an important characteristic for determining the efficiency and safety of explosive materials.
Higher VOD explosives are typically used for blasting hard rock formations.
Lower VOD explosives are used in situations where a controlled and less destructive explosion is
The output capacity of the dragline with 4.5 to 7.5 cu.m is in million cu.m per year.
The output capacity of the dragline depends on the size of the bucket it uses.
A larger bucket size allows for a higher output capacity.
The dragline's efficiency and operating conditions also affect its output capacity.
The output capacity can be calculated by considering the average number of cycles per hour and the bucket fill factor.
F...
I applied via Walk-in and was interviewed in Jan 2022. There were 2 interview rounds.
I was interviewed before Feb 2022.
Overman Gas testing First aid rescue
Drilling and production blasting
posted on 28 Jul 2021
I applied via Company Website and was interviewed in Jan 2021. There was 1 interview round.
Underground working in mining involves the use of blasting systems, support systems, and ventilation.
Underground working in mining is done through the use of tunnels and shafts.
Blasting systems are used to break up the rock and extract the desired minerals.
Support systems such as rock bolts, shotcrete, and steel arches are used to ensure the stability of the underground workings.
Ventilation systems are crucial for prov...
Gases like carbon monoxide and nitrogen oxides are present from blasting and are handled through ventilation and monitoring.
Gases are produced during blasting due to the combustion of explosives.
Carbon monoxide and nitrogen oxides are the most common gases produced.
These gases can be harmful to humans and the environment.
Ventilation systems are used to remove the gases from the mine.
Monitoring systems are used to detec...
posted on 25 Oct 2018
I applied via Campus Placement and was interviewed before Feb 2021. There was 1 interview round.
based on 2 reviews
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