The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1922-05-04

of zinc and the demand from this in
dustry is beginning to be more appar-
ent. owing to the fact that the large
tonnages of war scrap are practically
exhausted. Some of the copper propa-
ganda will affect zinc favorably in the
brass field
Zinc Shingles.
The newest and most interesting
outlet for zinc is as a roofing and sid
ing material and for leaders and caves
troughs This might be called largely
a war development for during the
period of hostilities the zinc-rolling
capacity of the country was largely
augmented and when peace came this
equipment and experience went beg
ging However. the New Jersey Zinc
Co. the Illinois Zinc Co. the American
Zinc Products Co, the Anaconda Cop
per Mining Co. and others, in coop
Grafton with the American Zinc Insti-
tute determined upon an active cam
paign of public education to the merits
of sheet zinc. They were aided in this
by the recent production of a larger
proportion of the more desirable cleo
trolytic and high grade zinc, and by
the fact that many Americans had be-
come cOgnizant of the advantages of
zinc as a building material through
war time observation in Europe, where
the metal has been used on roofs FOR
nearly a hundred years without re-
To succeed, it is not sufficient to
make a better mouse trap than ones
as Emerson suggested. The !
possible buyer must be taught that it |
actually is better trap. how to set it, |
and the proper kind of cheese to use |
of zinc building ma
terials have had to combat not only
ignorance and Indifference as to the
method of application and the eff
,iency of their product, but have also
lad to fight against an insdious atti-
ude on the part of iobbers and roof
RS inspired by the fact that repair
work would not be necessary or prof
table where zinc had been used How
ver much progress has been made.
nd inquiries are being received in a
onstantly increasing volume. Zinc
hingles for houses are as permanent
$ the house itself, and in the present {
esigns the butt -shingled effect of '
'ood is secured. An Oxidized surface S
f slate gray color has been per- '
acted which harmOnizes we'll with or d
mary forms of construction and fin. {
'h. To be sure the colored effects Il
ossible with copper cannot be secured.
kept by painting, but the cost is only \
alf that of copper; in fact it is little {
any more than that demanded for p
God wooden single n
Objections Overcome. Ii
An objection offered to the use of c
nc for caves troughs and leaders is a
ne high coefficient of expansion-it is
bout 90 times that of iron This has /;
cen solved by the use Of corrugations c
ip joints, and improved methods of n
angling IL only remains to make the "
lying public to understand that old II
elections no longer hold h
As an industrial sheathing and roof a
g, corrugated zinc should have
future. BY using somewhat U
aavier gage and by making the CORFU
atoms deeper, corrugated sheet has
zen developed only recently which can ci
laid on iron purlins spaced at con- U
sntionai distances. without danger of OF
'Iapse. BY thoroughly painting the b,
irlins before the sheets are laid. or tC
separating the zinc from the iron Il
= pieces Of asbestos. galvanic action is II
'oided and the roof will last indefi- fc
tely Where corrosion gases are pres W
IT. as at shelters. refineries. and
lemical plants. the advantages of a pl
'operly laid corrugated zinc roof and 81
ding should be great, but have hard to
been considered as yet. In fact. in II
e chapter on Roof Coverings" in fo