(6) Carbide in water-tight drums may be stored in the open in a fenced
enclosure at least 30 feet from buildings, adjoining property, or
inflammable materials. The drums must be protected from wet by a light
roof.

(7) The breaking of carbide must be done by men provided with respirators
and goggles, and care taken to avoid the formation of dust.

(8) Local or other authorities will issue from time to time special
regulations in regard to carbide trade premises.

The ITALIAN GOVERNMENT rules relating to the storage and transport of
carbide follow in the main those of the Austrian Government, but for
quantities between 300 and 2000 kilos sanction is required from the local
authorities, and for larger quantities from superior authorities. The
storage of quantities ranging from 300 to 2000 kilos is forbidden in
dwelling-houses and above the latter quantity the storage-place must be
isolated and specially selected. No special permit is required for the
storage of quantities not exceeding 300 kilos. Workmen exposed to carbide
dust arising from the breaking of carbide or otherwise must have their
eyes and respiratory organs suitably protected.

THE PURCHASE OF CARBIDE.--Since calcium carbide is only useful as a means
of preparing acetylene, it should be bought under a guarantee (1) that it
contains less impurities than suffice to render the crude gas dangerous
in respect of spontaneous inflammability, or objectionable in a manner to
be explained later on, when consumed; and (2) that it is capable of
evolving a fixed minimum quantity of acetylene when decomposed by water.
Such determination, however, cannot be carried out by the ordinary