§ 7-30. Transferring explosives — inclined chutes.

(a) Chute construction.

(1) When an inclined chute is employed, such chute shall be constructed of 1-inch planed boards with side guards, 4 inches high, extending 3 inches above top face of bottom of chute, and throughout its length fastened with brass screws.

(2) "D" shaped strips or runners not more than 6 inches apart and running lengthwise of the chute must be fastened to the upper surface of the bottom part by means of glue and wooden pegs extending through the bottom part and runners.

(b) Care of chute.

Chutes must be occasionally wiped down with waste moistened with machine oil, when dynamite packages are being handled.

(c) Mattress required.

A stuffed mattress 4 feet wide by 6 feet long and not less than 4 inches thick, or a heavy jute or hemp mat of like dimensions must be placed under the discharging end of the chute.

(d) Chute incline.

The incline of the chute should be such that the velocity of the packages sliding will not be great enough to cause violent shock when coming in contact with other packages or when reaching bottom of slide, or men must be stationed alongside the chutes to retard the velocity of the packages and prevent violent shocks when packages come in contact with each other or reach bottom of chute.