This datum should be used for handling mineral contents of machines and whatever else is supposed to hold minerals and make use of them. Variables: amount - raw amount of the mineral this container is holding, calculated by the defined value MINERAL_MATERIAL_AMOUNT=2000. max_amount - max raw amount of mineral this container can hold. sheet_type - type of the mineral sheet the container handles, used for output. parent - object that this container is being used by, used for output. MAX_STACK_SIZE - size of a stack of mineral sheets. Constant.