| Re: Mineral Extraction Timetables |
Wed, 04 March 2020 09:12   |
|
 magic9mushroom |
 | Commander |
Messages: 1361
Registered: May 2008 | |
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Lqdtr wrote on Wed, 04 March 2020 20:47Mineral Concentrations & Remote Mining" by Jason Cawley
Summing up, to approximate the minerals for a concentration change, use the following piece-wise function -
ending con >= 27 : 12500 * ln (starting con / ending con)
ending con 26-4 : 462 * (starting con - ending con)
ending con 3, 2 : 1000 each
ending con 1 : 2000.
Cawley says there's a loophole causing you to get more minerals with rapid mining. This would be the case if the mining required to drop a level was defined as 1250000/conc^2 mine-years but the minerals given were mines*conc, because then you'd get e.g. 2000 kT from 2000 mines on 100 conc but only inflict 2000 mine-years of impact (whereas with 1000 mines over 2 years you'd inflict 2000 mine-years of impact, but you'd only get 1930 kT because the conc was 93 in the second year).
However, Cawley is wrong. Mining impact required to drop a level is defined as 12500*(RWeffic/10)/conc minerals extracted, not in terms of mine-years. Thus, while 2000 mines does extract minerals more than twice as fast as 1000 mines, it also depletes the concentrations more than twice as fast.
He's also wrong about something else; it doesn't "go linear" at 27 with 12500/27 = 462 kT/point, but rather at 25 with 12500/25 = 500 kT/point. 4 -> 3 is also more than 1000 kT; I'm suspecting 1200. Haven't yet tested 3 -> 2 and 2 -> 1.
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