h. Workers in Metal.
i. Workers in Paper.
2. Chemical Manufacturers.
a. Acid, Alkali, Alum, Copperas, Prussian-Blue, and other Manufacturers.
b. Gunpowder Manufacturers, Percussion-Cap, Cartridge, and Firework Makers.
c. Brimstone and Lucifer-match Manufacturers.
d. White-lead, Colour, Black-lead, Whiting, and Blue Manufacturers.
e. Oil and Turpentine Distillers, and Varnish Manufacturers.
f. Ink Manufacturers, Sealing-wax and Wafer Makers.
g. Blacking Manufacturers.