test 87

Red Zone

Keep Out Of Shaft Area When Skips Are In Motion

Unstable Mine Shaft Do Not Enter

Caving Ground

Blasting Keep Away

Red Zone

Open Shaftway

Keep Out Open Shaft

Open Shaftway

Unstable Mine Shaft Do Not Enter

Firing In Progress

Condemned Mine Shaft

Keep Out Open Shaft

Unit Under Clearance

Unit Under Clearance

Condemned Mine Shaft