Several workers position the concrete bucket over a large funnel that will direct the concrete into the sidewalls of one of the low-level ports. Compressed air has been attached to the bucket in order to open a gate valve at the bottom when desired, releasing its contents. A vibrator is seen on the plywood floor; at 90 lbs. it required a strong man and a helper to operate. (Walter Volovsek)
Several workers position the concrete bucket over a large funnel.
Arrow Dam 8
Several workers position the concrete bucket over a large funnel that will direct the concrete into the sidewalls of one of the low-level ports. Compressed air has been attached to the bucket in order to open a gate valve at the bottom when desired, releasing its contents. A vibrator is seen on the plywood floor; at 90 lbs. it required a strong man and a helper to operate.
Walter Volovsek photo
