A limestone mine has the following equipment at its primary production face: Excavator: a 15 yd3 (11.5 m3) front-end loader with 40 sec cycle time Trucks: five 100 ton (90 tonne) trucks Material: average blasted rock with medium-hard digging conditions Working conditions: average Haulage cycle time: 20.0 min (a) What is the sustained production rate of the sys
A limestone mine has the following equipment at its primary production face: Excavator: a 15 yd3 (11.5 m3) front-end loader with 40 sec cycle time Trucks: five 100 ton (90 tonne) trucks Material: average blasted rock with medium-hard digging conditions Working conditions: average Haulage cycle time: 20.0 min (a) What is the sustained production rate of the sys
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A limestone mine has the following equipment at its primary production face: Excavator: a 15 yd3 (11.5 m3) front-end loader with 40 sec cycle time Trucks: five 100 ton (90 tonne) trucks Material: average blasted rock with medium-hard digging conditions Working conditions: average Haulage cycle time: 20.0 min
(a) What is the sustained production rate of the system in tons/hr, assuming 60 min of production per hour'?
(b) Which equipment (loader or trucks) governs?
(c) What improvements would you recommend to increase mine production without changing equipment?
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