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.
Overhead is the expenses for running a business. Such as electric, rent, payroll, etc. They are usually termed overhead expenses. Overhead is the expenses for running a business. Such as electric, rent, payroll, etc. They are usually termed overhead expenses.