Collapse of earth into underground mines, or subsidence, is a serious problem. In room-and-pillar and long-wall mines, columns of coal and other structures are used to support the ground above. Later in the mining process, they are often taken out. The mines are left to collapse.
We view overhead as two types of costs and define them as follows: Manufacturing overhead (also referred to as factory overhead, factory burden, and manufacturing support costs) refers to indirect factory-related costs that are incurred when a product is manufactured.
Q&A. Indirect manufacturing costs are a manufacturer's product costs other than direct materials and direct labor. Indirect manufacturing costs are also referred to as manufacturing overhead, factory overhead, factory burden, or burden. Under traditional cost accounting, the indirect manufacturing costs are allocated (or spread) to the products manufactured based on direct labor hours, direct labor costs, or production machine hours. However, in recent decades the indirect manufacturing costs have increased significantly and are less likely to be caused by the quantity of direct labor or production machine hours.