Hindustan Zinc Mining Engineer Interview Questions, Process, and Tips

Q1. Under ground related
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Q2. Hemm related
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Q1. About salary hike
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Q2. What is your expectation
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Q1. Optimum utilisation of hemm
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Q2. Water management in opencast
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Paper was of medium range

Q1. Tell something about u and why u choose this as carrer ?
Ans. 
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
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Q2. Tell something about our company ?
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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...read more
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Q1. Technical based question only
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Q2. Practical based questions according to my field of work
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Q1. What is current
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Q2. What is residence
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Q1. Working process and maintenance &troubleshooting
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Q1. Suitable banch height for 2cu.m shovel is
Ans. 
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...read more
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Q2. The max width of the gallery in Indian coal mines is
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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...read more
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Q3. The max length of the trailing cable is
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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, ...read more
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Q4. Detonating fuse consist core of
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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
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Q5. The VOD of detonating fuse is
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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 ...read more
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Q6. Safety fuse consist core of
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Q7. In the detonator the priming charge is
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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...read more
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Q8. Sheathed explosive coated with a sheath of
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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.
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Q9. The ANFO the water content should not be more than
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Q10. The gelling agent in slurry explosive is
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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...read more
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Q11. The VOD of emulsion explosive is
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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
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Q12. The shovel can dig below ground upto
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Q13. The output capacity of the dragline with 4.5 to 7.5 cu.m is million cu.mper year
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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...read more
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Q1. Open cast questions
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Q2. Drilling and blasting
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