Motherlode Mine
MiningEach pay-dirt gives 60 Mining XP plus bonus XP when the ore is cleaned from the sack (~21.9 at level 99), so ~82 XP/pay-dirt at 99. The ore is random (probabilities shown are at 99 Mining). ~750 pay-dirt/hr (~62k XP/hr; up to ~64k with the upper level, prospector outfit and an upgraded hopper). Also ~1 Golden nugget per 32 (untradeable - spent with Prospector Percy).
Fill a target level to plan the whole grind, or leave it blank to use the hours above.
Mining XP / hr61,500
Profit / hr335.3k
GP / XP+5.45
In 1 hour
Pay-dirts750
Mining XP61,500
Profit335.3k
Produces (expected)
18526,250
18229,250
20232,250
13675,000
17172,500
Value: 335,250
Pet chanceover 750 pay-dirt
Rock golem 1/247,175 0.30%Rates are per hour; totals are for the basis above. Prices are live from the Grand Exchange.