ous or
poisonous gases; (7) nor in the manufacture or use of compositions
of lye in which the quantity thereof is injurious to health; (8) nor
on scaffolding; (9) nor in heavy work in the building trades; (10)
nor in any tunnel or excavation; (11) nor in, about or in connection
with _any mine, coal breaker, coke oven, or quarry_; (12) nor in
assorting, manufacturing or packing tobacco; (13) nor in operating
any automobile, motor car or truck; (14) nor in a bowling alley;
(15) nor in a pool or billiard room; (16) nor in any other
occupation dangerous to the life and limb or injurious to the health
or morals of such child.

=Employer to furnish satisfactory evidence of age.=

Sec. 13007-1. An inspector of factories, attendance officer, or
other officer charged with the enforcement of the laws relating to
the employment of minors or school attendance may make demand on any
employer in or about whose place or establishment or material or
equipment a person apparently under the age of eighteen years is
employed or permitted or suffered to work, and whose employment
certificate is not filed as required by this act, that such employer
shall furnish him satisfactory evidence that such person is in fact
over eighteen years of age. The inspector of factories, attendance
officer, or other officer charged with the enforcement of such laws,
shall require from such employer unless an overage certificate is
held by the employe the same evidence of age of such child as is
required upon the issuance of an age and schooling certificate.
Failure of such employer to produce such evidence shall be deemed a
violation of the laws relating to the employment of minors.

=Failure to produce satisfactory evidence of age.=

Sec. 13007-2. In case any employer shall fail to produce and deliver
to a factory inspector, truant officer, or other officer charged
with the enforcement of this act, within ten days after demand made
pursuant to section 13007-1 of this act, the evidence of age therein
required, proof of the making of such demand and of such failure to
produce and file such evidence shall be prima facie evidence of the
illegal employment of such child in any prosecution brought
therefor.

=Age and schooling certificate; by whom approved.=

Sec. 7766. An age and schooling certificate may be issued only by
the superintendent of schools and only upon satisfactory proof that
the child to whom the certificate is issued is over s