Mining Engineering case studies
Mining Engineering · Put your knowledge to work in context.
The Principles and Practice of Engineering (PE) exam in Mining and Mineral Processing is a discipline-specific licensure exam administered by NCEES. It is designed for engineers who have gained a minimum of four years of post-college work experience in mining or mineral processing and who are pursuing professional engineer licensure through a state or territorial licensing board. The Mining Engineering case studies are 5 cases and about 5,349 words.
1Cyclone Classification Failure at 390% Circulating Load
A 36 ft SAG mill (8 MW installed, 12% ball charge, 75% critical speed) discharges through a pebble crusher to a 5.5 m × 9.1 m ball mill (30% ball charge, 6.5 MW installed). Ball mill discharge reports to ten 660 mm cyclones, eight in service; overflow goes to copper flotation and underflow returns to the ball mill.
1,017 words, about 5 min2Diesel Exhaust Overexposure Behind a Ventilation Short Circuit
An underground sublevel stoping mine is accessed by a decline and ventilated by a single 2 × 110 kW axial main fan at the portal, rated 55 m³/s at 1,800 Pa. The diesel fleet is three 250 kW LHDs and two 160 kW haul trucks.
1,043 words, about 5 min3Hangingwall Dilution and a Post-Blast Fall in a 60 m Open Stope
A sublevel open stope is 40 m long, 25 m wide and 60 m high. The hangingwall is foliated andesite cut by two joint sets and a 4 m wide altered fault running parallel to, and about 8 m behind, the hangingwall contact.
1,175 words, about 6 min4Vibration, Airblast and Flyrock at a 450 m Receptor
An open pit copper operation blasts 10 m benches with 115 mm holes at 3.0 m burden and 3.6 m spacing, ANFO at 0.8 g/cm³, 2.5 m of stemming, and 8 holes per delay on 12 ms non-electric delays, giving about 360 kg per delay. The nearest residence is 450 m from the shot.
1,113 words, about 6 min5Cut-off Grade, Third-Party Ore and a 900 kt Low-Grade Stockpile
A copper concentrator is nameplate 2.5 Mt/y and actually treated 2.45 Mt in the last year. The reserve is 20 Mt at 0.88% Cu, mined at a strip ratio of 1.8.
1,001 words, about 5 min