Which method is listed as a degassing option without power?

Which method is listed as a degassing option without power?

• A. Weekend Ventilation
• B. Brattice Across The Fan
• C. Venturi/ Air Fan - Tubes Or Brattice
• D. Brattice Out C/T From Rib Line To C/T Headings Of A Min Of 1m Off Rib Line

Answer: (A)

Degassing relies on moving methane-rich air out of the mine and replacing it with fresh air. Weekend ventilation is the one that can operate without electrical power because it makes use of natural air movement driven by surface winds and pressure differences when the main fans aren’t running. This passive flow dilutes and removes gas without needing powered equipment. The other methods rely on fans or devices to move air, so they depend on power to achieve the ventilation and gas removal.

Degassing relies on moving methane-rich air out of the mine and replacing it with fresh air. Weekend ventilation is the one that can operate without electrical power because it makes use of natural air movement driven by surface winds and pressure differences when the main fans aren’t running. This passive flow dilutes and removes gas without needing powered equipment. The other methods rely on fans or devices to move air, so they depend on power to achieve the ventilation and gas removal.