216 LAWS OF MARYLAND [CH. 8
and declared by the Commissioner of the Department of
Labor and Industry to be hazardous or injurious to the life,
health, safety or welfare of such minors and such declara-
tions shall have the same force and effect as if originally
included in this sub-title.
19. Nothing in this sub-title shall be construed to prevent
the use of machines declared particularly hazardous for short
periods of time and under the direction and supervision of
an instructor as a necessary part of apprenticeship training
if such training is carried on in accordance with a written
apprenticeship agreement that has been approved by the
Federal Committee on Apprenticeship of the Bureau of Ap-
prenticeship, U. S. Department of Labor or by a State ap-
prenticeship council or other authority recognized by the
Federal Committee on Apprenticeship, or by the Commis-
sioner of the Department of Labor and Industry.
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20. (a) No minor under the age of 16 years shall be em-
ployed, permitted or suffered to work in any gainful occupa-
tion as defined in this sub-title for more than 6 days a week
or for more than 3 hours on any school day nor for more than
8 hours on any non-school day, or for more than 23 hours
in a week during which school is in session for 5 or more
days or for more than 40 hours in any one week when the
schools are not in session. In any one week in which school
is in session for less than five days, such child may be em-
ployed for not more than 8 hours on any one day that school
is not in session, but in no case shall his total hours during
such week ewceed forty. No minor under 16 years of age
who is gainfully employed within the meaning of this sub-
title shall be employed, permitted or suffered to work before
the hour of 7 a.m. or after the hour of 7 p.m.
(b) No minor of 16 or 17 years of age who is attending
day school and is gainfully employed within the meaning of
this sub-title outside of school hours shall be employed, per-
mitted or suffered to work more than 6 days in any one week
or more than 4 hours on a school day, or more than 8 hours
on a non-school day, or more than 28 hours during any week
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