These derricks were later replaced with steam hoists as work progressed. Collapsible crane derricks were fitted to access the cargo space. These incorporated one 30-ton, two 10-ton and eight 5-ton derricks for cargo handling. These include wide roads, irrigation ditches, unpainted barns, and special wooden hay derricks. Mining equipment such as sluices, flumes, wheels and derricks were carried away across the state. Bamboo towers were erected, similar in style to modern-day oil derricks. Much of the landscape remains scarred with rusting oil derricks. Some large derricks are mounted on dedicated vessels, and known as floating derricks and sheerlegs. These two companies manufactured and distributed pumps and derricks. Within weeks oil derricks were erected all over the area. He then began selling lumber for derricks in the oil fields of southeastern Kansas. Many oil derricks in the area were destroyed. The guano was just piled in dumps near the engine houses and derricks. The Municipal Building's frame had of steel, which required 20 derricks to erect. Forms of derricks are commonly found aboard ships and at docking facilities.