Martin Marietta Materials - - Responsibilities: Safely operate heavy-duty front-end loaders to move raw materials from stockpiles to customer vehicles, ensuring accurate weight distribution and material types; Regulate the flow of materials to and from conveyors, surge piles, chutes, and storage bins to maximize plant production; Maintain the quality and separation of various product stockpiles to prevent contamination and ensure environmental compliance; Maintain safe working speeds and manage the flow of external truck drivers and equipment within the yard to prevent accidents; Perform routine preventative maintenance, including checking tire pressure, oil levels, and diesel fuel, and greasing moving parts daily