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Hello everyone; Can anyone post a solution to this example from Hartman's ventilation book: Blasting in a raise liberates 200 ft^3 of fumes. Raise dimensions are 4 ft x 6 ft in cross section and raise is 40 ft above the level. Auxilliary ventilation supplies 800 cfm of fresh air. How long will...

Hello everyone; Can anyone post a solution to this example from Hartman's ventilation book: Blasting in a raise liberates 200 ft^3 of fumes. Raise dimensions are 4 ft x 6 ft in cross section and raise is 40 ft above the level. Auxilliary ventilation supplies 800 cfm of fresh air. How long will...

I was thinking about underground mining...

Hi all; Does anyone have experience in using TCR407 Power total station? What are your opinnions on this instrument? Thanks!

Thanks a lot minerk!

Hello; I would really appreciate if someone could tell me more about the specifications and operation properties of Gardner Denver RDC-16b machine. I can't find any documentation or something regarding additional equipment that goes with it, steel, pipes... Any chances, someone? Thanks a lot...

Hi all; Does anyone have experience in creating 3D Block Model for narrow gold veins? I am using MineSight with its gridded seam tools and I was just wondering if anyone on this forum has some good tips about this...