- Author
- Timko, R. J. | Thimons, E. D.
- Title
- Techniques for Constructing Concrete Block Stoppings. Bureau of Mines Handbook.
- Coporate
- Department of the Interior, Washington, DC
- Keywords
- mine ventilation | concrete blocks
- Abstract
- The Bureau of Mines has evaluated several techniques that will enhance the airtightness of concrete block permanent stoppings used in mines for airflow control. These techniques have been combined to create three distinct stopping types, each with its own utility. This handbook describes the three types of stoppings and includes illustrated step-by-step instructions for their construction.