List of top Mining Engineering Questions

In work-study (time and motion study) applied to mining operations, what is the primary purpose of a “rating factor”?
Lerchs--Grossmann algorithm or nested pit shells are most commonly used for which stage of mine planning?
Which sampling method is most commonly used for grade control in open-pit mining during production?
Which of the following quality control practices is essential to detect and correct systematic errors in assay results during mineral resource estimation?
In reserve estimation, what does the term “kriging” primarily refer to in geostatistics?
Which of the following is NOT typically a major component of long-term mine planning?
What does a Safety Management Plan (SMP) in mining primarily focus on?
A Draeger Gas Mask does not filter
The water gauge developed and quantity circulated with an axial flow fan depends on
For a mixture of inflammable gases, both the lower and upper explosibility limits can be computed using
A centrifugal fan rotating at \(600\) rpm delivers \(70\ \mathrm{cu.m/s}\) of air. If the speed is reduced to \(300\) rpm, the quantity of air delivered in \(\mathrm{cu.m/s}\) will be
The quantity of air taken by an auxiliary fan should not exceed
The primary cause of subsurface fires in underground mines is
Which mine gas is colourless, odourless, and highly toxic, often called the “silent killer” in mining?
What hazard does inundation refer to in underground mines?
In underground mining, what is the main factor contributing to dust explosions?
The cross-measure borehole method is used for
Which rescue apparatus is commonly used by mine rescue teams to provide breathable air in toxic environments?
The chemical Hopcalite is used in
In a mine ventilation system, the resistance of an airway is such that when air quantity is \(10~\mathrm{m^3/s}\), the pressure drop is \(100~\mathrm{Pa}\). What will be the pressure drop when the air quantity is increased to \(20~\mathrm{m^3/s}\)?
In an underground coal mine, a fan delivers air through a cross-sectional area of \(5~\mathrm{m^2}\) with an average air velocity of \(4~\mathrm{m/s}\). What is the quantity of air circulated by the fan?
In a centrifugal flow fan, the conversion of velocity pressure to static pressure is accomplished with the help of
A centrifugal fan rotating at \(500~\mathrm{rpm}\) delivers \(70~\mathrm{m^3/s}\) of air. If the speed is reduced to \(200~\mathrm{rpm}\), the quantity of air delivered in \(\mathrm{m^3/s}\) will be
Which one of the following is used as an escape apparatus?
The operating point of a mine fan is