210 LAWS OF MARYLAND [CH. 8

manufactured in conjunction with small arms ammunition.
No minor under 18 years of age may be employed, permitted
or suffered to work in the following occupations in or al)out
any plant manufacturing small arms ammunition not ex-
ceeding .50 caliber in size, shotgun shells, or blasting caps
when manufactured in conjunction with small arms ammuni-
tion:

(b) All occupations involved in the manufacturing, mixing,
transporting, or handling of explosive compounds and all
other occupations requiring the performance of any duties
in the explosive area in which explosive compounds are manu-
factured or mixed.

(c) All occupations involved in the manufacturing, trans-
porting or handling of primers and all other occupations re-
quiring the performance of any duties in the same building
in which primers are manufactured.

(d) All occupations involved in the priming of cartridges
and all other occupations requiring the performance of any
duties in the same workroom in which rim-fire cartridges are
primed.

(e) All occupations involved in the plate loading of car-
tridges and in the operation of automatic loading machines.

(f) All occupations involved in the loading, inspecting,
packing, and shipping of blasting caps.

(g) Definitions. The term "plant manufacturing explo-
sives or articles containing explosive components" means the
land with all buildings and other structures thereon used in
connection with the manufacturing or processing of explo-
sives or articles containing explosive components. The terms
"Explosives" and "articles containing explosive components"
mean and include ammunition, black powder, blasting caps,
fireworks, high explosives, primers, smokeless powder, and all
goods classified and defined as explosives by the Interstate
Commerce Commission in "Regulations for Transportation by
Rail of Explosives, etc" as amended, Docket 3666, issued
pursuant to the Act of March 4, 1921 (c. 112, 41 Stat. 1444,
U. S. C., title 18, sec. 382).

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(h) NO MINOR UNDER 18 YEARS OF AGE SHALL BE
EMPLOYED, PERMITTED OR SUFFERED TO WORK
AS A COMMERCIAL MOTOR VEHICLE OPERATOR AND