Colour Blowing, etc25.
(1)
Colour blowing shall not be done with the mouth.
(2)
No person shall be employed in colour blowing unless there is in the Health Register referred to in Regulation 8 a certificate of the Appointed Doctor either that that person by reason of short sight should not be so employed when not wearing glasses or (as the case may be) that that person may be so employed without glasses; and in the first mentioned case the person shall not be employed or work in colour blowing unless wearing glasses:
Provided that the Appointed Doctor shall have power to revoke or modify at any time any certificate issued for the purposes of this Regulation and to attach to any such certificate a condition that the person shall be re-examined by the Appointed Doctor after such interval as may be specified in the certificate.
(3)
All pieces of cotton wool or similar material which have been used in the process of ground laying or colour dusting shall:—
(a)
be kept in a suitable receptacle or receptacles which shall be provided by the occupier for the purpose, and
(b)
when no longer required for use, be removed and burnt without unreasonable delay.