Drums, lids, and covers hold and secure liquids, semi-solids, and solids. Open-head transport drums have open tops for unobstructed access when dumping and filling. Closed-head transport drums are enclosed containers with small openings on their topside for controlled filling and dispensing. Salvage and overpack drums are secondary containment containers that hold damaged or leaky drums and containers during shipping and storage. Drum bungs, capseals, and locks secure bungholes on closed-head drums to prevent access and protect contents.