Icon with dosing or dispenser funnel symbol and door and compound or raw materials symbol showing stacked/grouped particles and spinner or circle with dots on the top left corner. Used in material dosing, dispensing control systems and precision measurement applications. Indicates access control, door closure, or alternate barrier system. Used in compound processing, raw materials, quality control, material handling systems and chemical mixture monitoring interfaces. Shows progress, loading status, background operation, ongoing processes, or wait states. Used in batch processing control, monitoring systems and production line management interfaces.