PEC EPE Mining case studies
PEC EPE Mining · Put your knowledge to work in context.
The Engineering Practice Examination (EPE) is a Pakistan Engineering Council (PEC) assessment referenced in PEC's CPD section, where PEC publishes an EPE Guidebook, a policy for redressal of EPE grievances, and historical EPE results. This profile covers the Mining Engineering discipline. The PEC EPE Mining case studies are 5 cases and about 3,407 words.
1Methane exceedance on a longwall return with limited fan capacity
A 1.6 Mt/y longwall coal mine in a gassy seam is producing 4,800 t/day from one face. Intake airflow is 24 m³/s; the return airway measures 1.35% methane on a calibrated fixed monitor, and the statutory trip is set at 1.0%.
690 words, about 3 min2Water pressure and blast vibration on a fault-controlled pit wall
A copper-gold open pit is 120 m deep and planned to 180 m. The west wall is cut in 12 m benches with 70° bench faces and a 45° overall angle.
692 words, about 3 min3Skip hoist rope safety factor after a proposed payload increase
A vertical shaft is 600 m deep and hoists ore in a single-drum skip. The skip payload is 14 t, the empty skip mass is 10 t, and the rope has a linear mass of 7.2 kg/m and a breaking force of 1,350 kN.
669 words, about 3 min4Blast design review next to a village
A limestone quarry supplies a cement plant and blasts once a day at 14:00. Holes are 115 mm diameter on a 4.2 m burden and 5.0 m spacing, with a 12 m bench and 0.8 m subdrill.
683 words, about 3 min5Tailings pond freeboard before cyclone season
An upstream-raised tailings storage facility has reached 85 m height. The beach is 60 m wide, the pond is 40 m from the crest, and freeboard is 1.5 m.
673 words, about 3 min