Configures for which materials you want to get a notification in case the trucks assigned here cannot get rid of them. Example case is where you run out of dumping designations and mining trucks can't get rid of dirt.
Efficiency is a ratio of produced power over used input. It represents how efficiently is input product converted to mechanical power. If the shaft is overloaded, some produced power will be wasted and efficiency will go down accordingly. There is also loss of efficiency when the machine is starting-up. To avoid startup losses, this machine should run continuously without interruption.
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