924 WORK——HOURS OF, IN FACTORIES. [ART. 100

machines used in picking wool, cotton, hair or any other material, card-
dug machines, paper-lace machines, leather-burnishing machines, job
or cylinder printing presses operated by power other than foot power,
boring or drill presses, stamping machines used in sheet-metal and tin-
ware or in paper and leather manufacturing or in washer or nut fac-
tories, metal or paper cutting machines, corner-staying machines in
paper-box factories, corrugating rolls, such as are used in corrugated
paper, roofing or washboard factories, steam boilers, dough brakes or
tracker machinery of any description, wire or iron straightening or
drawing machinery, rolling-mill machinery, power punches or shears,
washing, grinding or mixing machinery, calender rolls in paper and
rubber manufacturing, laundering machinery; or in proximity to any
hazardous or unguarded belts, machinery or gearing; or upon any rail-
road, whether steam, electric or hydraulic; or upon any vessel or boat
engaged in navigation or commerce.

1912, ch. 731, sec...8.

8. No child under the age of sixteen years shall be employed, per-
mitted or suffered to work in any capacity in, about or in connection
with any processes in which dangerous or poisonous acids are used; nor
in the manufacture or packing of paints, colors, white or red lead; nor
in soldering; nor in occupations causing dust in injurious quantities;
nor in the manufacture or use of dangerous or poisonous dyes, nor in
the manufacture or preparation of compositions with dangerous or
poisonous gases; nor in the manufacture or use of compositions of lye
in which the quantity thereof is injurious to health; nor on scaffolding;
nor in heavy work in the building trades; nor in any tunnel or excava-
tion; nor in, about or in connection with any mine, coal breaker, coke
oven, or quarry; nor in assorting, manufacturing or packing tobacco;
nor in operating any automobile, motor car or truck; nor in a pool or
billiard room; nor in any other occupation dangerous to the life and
limb, or injurious to the health or morals of such child; nor shall any
child under the age of sixteen years be employed upon the stage of any
theatre or concert hall or in connection with any theatrical performance
or other exhibition or show; provided, that the Chief of the Maryland
Bureau of Statistics and Information may issue a permit allowing a
child under such age to appear in connection with theatrical perform-
ances or other exhibition or show, for a period not exceeding two weeks,
when, in his opinion, such permit is justified by the evidence presented
to him.

3912, ch. 731, sec. 9.

9. No child under sixteen years of age shall be employed, per-
mitted or suffered to work in, about or in connection with any estab-
lishment or occupation named in sections 4 and 5 unless the person,
firm or corporation employing such child procures and keeps on file,
and accessible to any attendance officer, inspector of factories, or other
authorized inspector or officer charged with the enforcement of this sub-