#define FIRST_DUCT_LAYER 1
#define SECOND_DUCT_LAYER 2
#define THIRD_DUCT_LAYER 4
#define FOURTH_DUCT_LAYER 8
#define FIFTH_DUCT_LAYER 16

#define DUCT_LAYER_DEFAULT THIRD_DUCT_LAYER

#define MACHINE_REAGENT_TRANSFER 10