ALBERT C. RITCHIE, GOVERNOR. 931

(12) Construction, installation or operation of electric
light and electric power lines, dynamos or appliances and pow-
er transmission lines.

(13) Paving, sewer and subway construction, work under
compressed air, excavation, tunneling and shaft sinking, well
digging, laying and repair of underground pipes, cables and
wires, not included in paragraph 5 of this section.

(14) Lumbering, logging, river-driving, rafting, booming,
saw mills, shingle mills, lath mills, manufacture of veneer and
of excelsior, manufacture of staves, spokes or headings.

(15) Pulp and paper mills.

(16) Manufacture of furniture, interior woodwork, or-
gans, pianos, piano actions, canoes, small boats, coffins, wicker
and rattan ware, upholstering, manufacture of mattresses or
bed springs.

(17) Planing mills, sash and door factories, manufacture

of wooden and corrugated paper boxes, cheese boxes, mould-
ings, window and door screens, window shades, carpet sweep-
ers, wooden toys, articles and wares or baskets.

(18) Mining, reduction of ores and smelting, preparation
of metals or minerals.

(19) Quarries; Sand, shale, clay or gravel pits, lime kilns;
manufacture of brick, tile, terra-cotta, fire-proofing, or paving
blocks, manufacture of calcium carbide, cement, asphalt or
paving materials.

(20) Manufacture of glass, glass products, glassware,
porcelain or pottery.

(21) Iron, steel or metal foundries; rolling mills; manu-
facture of castings, forgings, heavy engines, locomotives, ma-
chinery, safes, anchors, cables, rails, shafting, wires, tubing,
pipes, sheet metal, boilers, furnaces, stoves, structural steel,
iron or metal.

(22) Operation and repair of stationary engines and boil-
ers, not included in other paragraphs of this section.

(23) Manufacture of small castings or forgings, metal
wares, instruments, utensils and articles, hardware, nails, wire
goods, screens, bolts, metal beds, sanitary, water, gas or elec-
tric fixtures, light machines, typewriters, cash registers, add-