Indian Minerology

Mine Ventilation MCQ Questions - Part 05 (Final) 🌬️ Mine Ventilation MCQ Questions - Part 05 (Final) 61. In India, who is responsible for enforcement of ventilation rules in mines? A. DGMS B. CIL C. Ministry of Coal D. State Govt Show Answer Answer: A. DGMS 62. As per Coal Mines Regulations, velocity of air in gassy seams should not be less than: A. 0.25 m/s B. 0.5 m/s C. 1.0 m/s D. 2.0 m/s Show Answer Answer: B. 0.5 m/s 63. In fiery seams, what type of fans are mandatory? A. Ordinary fans B. Flameproof electrical fans C. Booster fans only D. Hand fans Show Answer Answer: B. Flameproof electrical fans 64. Which form is required to record statutory ventilation measurements? A. Form 6A B. Form 2 C. Mine Diary D. Rescue Report Show Answer Answer: A. Form 6A 65. Ventilation planning for a new mine is mainly based on: A. Seam thickness B. Production rate & gas em...

Mine Ventilation MCQ Questions - Part 04 🌬️ Mine Ventilation MCQ Questions - Part 04 46. Ventilation “leakage” in mines means: A. Fresh air supply B. Air short-circuiting through stoppings/doors C. Recirculation D. None Show Answer Answer: B. Air short-circuiting through stoppings/doors 47. High leakage reduces: A. Fan efficiency B. Ventilation effectiveness C. Both A and B D. None Show Answer Answer: C. Both A and B 48. Which construction is mainly used to reduce leakage in galleries? A. Brattices B. Stoppings C. Air crossing D. Trap doors Show Answer Answer: B. Stoppings 49. Temporary stoppings are generally made of: A. Brick masonry B. Concrete C. Brattice cloth or wooden boards D. RCC wall Show Answer Answer: C. Brattice cloth or wooden boards 50. Permanent stoppings should be constructed from: A. Masonry / Brick wall / RCC B. Cloth C. Canvas brattice D. None Show...

Mine Ventilation MCQ Questions - Part 03 🌬️ Mine Ventilation MCQ Questions - Part 03 31. A common method of ventilation survey in mines is: A. Pressure/quantity measurement B. Dust Sampling C. Explosive survey D. Liquid testing Show Answer Answer: A. Pressure/quantity measurement 32. Tracer gas method is used to measure: A. Air quantity B. Ventilation leakage C. Fan efficiency D. Gas drainage Show Answer Answer: B. Ventilation leakage 33. Methanometer is used to measure: A. Air velocity B. Methane percentage C. Oxygen percentage D. Dust concentration Show Answer Answer: B. Methane percentage 34. Flame safety lamp is primarily used for: A. Lighting B. Detection of firedamp C. Detect oxygen depletion D. Both B and C Show Answer Answer: D. Both B and C 35. Psychrometer is used to measure: A. Air pressure B. Air humidity / wet bulb temperature C. Gas dilution rate D. Dust ...

Mine Ventilation MCQ Questions - Part 01 🌬️ Mine Ventilation MCQ Questions - Part 01 1. The main purpose of mine ventilation is: A. To cool machinery B. To provide fresh air and dilute gases C. To improve illumination D. To drain water Show Answer Answer: B. To provide fresh air and dilute gases 2. Which gas is called "firedamp" in mines? A. Methane B. Carbon Monoxide C. Nitrogen D. Hydrogen Show Answer Answer: A. Methane 3. The normal oxygen percentage in mine air should be at least: A. 14% B. 16% C. 19% D. 21% Show Answer Answer: D. 21% 4. Blackdamp in mines is a mixture of: A. CO + CH4 B. CO2 + N2 with low oxygen C. SO2 + O2 D. Only nitrogen Show Answer Answer: B. CO2 + N2 with low oxygen 5. Which unit is used to measure airflow in mines? A. m/s B. m³/s or m³/min C. Pascal D. kg/m³ Show Answer Answer: B. m³/s or m³/min 6. The ...

Mine Ventilation MCQ Questions - Part 02 🌬️ Mine Ventilation MCQ Questions - Part 02 16. Air Quantity (Q) in mine ventilation is given by: A. Q = v × A B. Q = p/h C. Q = R × L D. None Show Answer Answer: A. Q = v × A (velocity × area) 17. The instrument used to measure mine air pressure is: A. Manometer B. Anemometer C. Hygrometer D. Psychrometer Show Answer Answer: A. Manometer 18. The main mine fans are generally installed at: A. Pit top (Surface) B. Underground face C. Inside gob D. On haulage road Show Answer Answer: A. Pit top (Surface) 19. Which type of fan is commonly used as a main mine fan? A. Centrifugal Fan B. Propeller Fan C. Axial Flow Fan D. Roof Fan Show Answer Answer: C. Axial Flow Fan 20. Booster fans are used for: A. Increasing airflow in districts B. Main ventilation only C. Cooling equipment D. Rescuing persons Show Answer Answer: A. Increasing air...

A Comprehensive Guide Mine ventilation is a critical component of the mining process, providing a safe and healthy environment for miners. A well-designed mine ventilation system is essential for removing hazardous gases, dust, and heat from the mine, and providing a comfortable working environment for miners.  In this blog post , we will explore the key considerations and design principles for a mine ventilation system, with a focus on the Indian mining industry. Importance of Mine Ventilation System Design in Indian Mining Industry The Indian mining industry is one of the largest in the world, with a significant portion of the country’s economy dependent on mining. However, the industry is also plagued by safety concerns, with many mines lacking proper ventilation systems. A well-designed mine ventilation system is essential for ensuring the safety and health of miners, and for increasing productivity and efficiency. Key Considerations for Mine Ventilation System Desi...

A Comprehensive Guide  Mine ventilation is a critical component of the mining process, playing a vital role in maintaining a safe and healthy environment for miners. Ventilation systems help to remove hazardous gases, dust, and heat from the mine, ensuring that the air is breathable and the temperature is tolerable.  In this blog post, we will explore the three main types of mine ventilation: Mechanical, Natural, and Hybrid. Introduction to Mine Ventilation  Mine ventilation is the process of providing a safe and healthy environment for miners by removing hazardous gases, dust, and heat from the mine. The ventilation system helps to: Remove hazardous gases such as methane, carbon monoxide, and hydrogen sulfide Reduce dust levels to prevent respiratory problems Control temperature and humidity levels to prevent heat stress and discomfort Provide a safe and healthy environment for miners Mechanical Mine Ventilation  Mechanical mine ventilation uses fans an...

The Role of Ventilation in Gas Control: Safeguarding Mines through Effective Airflow 1. Design and Implementation of Ventilation Systems in Mines:- Strategic Planning:-    - Mine Layout Considerations:- Incorporating ventilation needs into mine design, considering the layout and potential gas sources.    - Entry and Exit Points:- Designing efficient entry and exit points for fresh air and contaminated air removal. Ventilation Equipment:-    - Fans and Ducts:- Utilizing fans and ducts to direct airflow and control the movement of air within the mine.    - Ventilation Controls:- Implementing controls to adjust the volume and direction of airflow as needed. 2. Effective Ventilation and Gas Dispersion:- Gas Dilution:-    - Diluting Gas Concentrations:- Ventilation systems dilute potentially harmful gas concentrations by introducing fresh air.    - Gas Removal:-  Efficiently removing contaminated air to prevent the buildup ...

Navigating Crisis: The Crucial Role of Ventilation in Mine Emergency Response In the heart of the earth, where miners toil in pursuit of precious resources, the unexpected can strike at any moment. Mines, by nature, pose inherent risks that demand meticulous planning and swift response in emergencies. Among the myriad factors that contribute to a comprehensive emergency response plan, ventilation stands as a paramount element, ensuring the safety and well-being of miners in critical situations. Ventilation systems in mines serve a dual purpose – maintaining air quality for day-to-day operations and, more crucially, safeguarding lives when emergencies arise. The effective management of airflow plays a pivotal role in diluting harmful gases, preventing the accumulation of toxic substances, and providing a constant supply of fresh air to trapped miners. Strategies for Ensuring Constant Air Supply:- 1. Ventilation Network Design:- A well-designed ventilation network is the ba...