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Author: Admin | 2025-04-28
Ore is output than is removed from the patch, mining productivity extends the amount of ore generated from a patch.Mining drills have a property called resource drain. When the drill generates a non-productivity ore, it subtracts one ore from the patch. Resource drain is the probability that this subtraction actually takes place. 100% resource drain means that the subtraction always happens; 50% resource drain means that the resource is only drained from the patch 50% of the time. This means that, with 50% resource drain, the patch will last twice as long.Unlike mining productivity, low resource drain does not generate more ore in the same period of time; it merely extends the life span of the resource patch. As these are two independent factors, they multiply into each other. A +100% productivity bonus combined with 50% resource drain means that a 1M ore patch will generate 4M ore. It will generate that 4M ore twice as fast as it would with no productivity, and the patch will last twice as long as with 100% resource drain (assuming ore is consumed as quickly as it is produced).Burner and electric drills have 100% drain, while big mining drills have 50%. Quality lowers the resource drain by 1/6th of the base-quality drain per quality level, with legendary providing a double-bonus.Resource outputUnlike most other equipment, mining drills will output resources directly without the need of inserters. This includes transport belts, chests, other mining drills, furnaces, assembling machines, etc. Burner drill to chest Burner drill
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