Line curtain distance relative to the face: how close should it be hung?

Line curtain distance relative to the face: how close should it be hung?

• A. Not to exceed 12 feet
• B. Not to exceed 10 feet
• C. Not to exceed 8 feet
• D. Not to exceed 15 feet

Answer: (B)

Line curtains are used to direct ventilation and contain dust and debris near the mine face. Placing the curtain within a close, workable distance helps intercept the air flow and any dust before it moves toward the operator or into the return air, improving air quality and visibility. The guideline to keep it within 10 feet of the face provides a balance between effective interception of contaminants and allowing enough space for equipment and personnel to work. If the curtain is set farther away, dust and gas can bypass it and reduce protection; if it’s placed too close, it can get in the way of operations. So, keeping the curtain not more than 10 feet from the face is the best practice.

Line curtains are used to direct ventilation and contain dust and debris near the mine face. Placing the curtain within a close, workable distance helps intercept the air flow and any dust before it moves toward the operator or into the return air, improving air quality and visibility. The guideline to keep it within 10 feet of the face provides a balance between effective interception of contaminants and allowing enough space for equipment and personnel to work. If the curtain is set farther away, dust and gas can bypass it and reduce protection; if it’s placed too close, it can get in the way of operations. So, keeping the curtain not more than 10 feet from the face is the best practice.