Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1893-04-11
ASPHALTIC PAVING.
New hills For lis Manufacture Start
cd Up Today.
THE wAsArcu cOnpASy's PLANT.


louhy lhc Mhsetcn Ahpnhltum com-
rany's new mill on Filth West street,
near the corner OF Fifh South, began
manufacturing operations. The man
lgers had Invited members Of the City
Council ami other officials and promi-
nent business men 10 be present, ut tho
time OF starting, and quite a number
accepted the invitation aud were In.
,trcslcd In looking through the mills
aud In obtainiI g at understanding Of
the process Of compounding asphaltum
In n form suitable Tor laying pave
ments.
The Wasalch o3mpnny's old mill,
which was erected uple Of years
ngo at North Salt Lake, Mt cost Of
$4,000, Is still operated. But tho
magnitude Of the company's business
required an additional plant, and tho
new location was selected. There q
mill costing $50, 900 whs built, aud In
this the wheels began to revolvo today.
The main building is u three.story
structure, 80 % feet. There are
other aud smaller building, one Of
these being an engine house Is X 80
and another the boiler room 20 x 40.
Two GO.norso.power boilers furnish tho
steam !or u l25.houe.power engine
whc drives the machinery.
ono OF tho main ingredients Of tho
material turned cut by the company is
turned out 10y the company 4. ssphaltic
ilmo rock. This Is brought from tho
compauy's mines In Clear Crrek can.
yon, seventy miles along the n. q. w.
frcm thiH city. The rock IL mined anu
brought down 20 the wagon road In
cars ON gravity tramway 900 feet
long. IL is then loaded on wagons aud
conveyed to the Cllmer switch, from
where IL In hauled by rail to this city
AMI delivered at the mile.
In this asphaliic lime rock IL found
one OF the chief qualities OF durability
pososied by the manufactured
paving. by IL 10 produced the best
material used on the streets and side.
walks Of London, Paris and o.her
large European cities, where asphal,um
Is supefseding the tagstone anu other
| pavements.
Tho main building Ia occupied en-.
tiroly In preparing this rock Tor Ia.
hnal ndmixtufe with other ingredients
before II IL turned out ready
for use. On the flfst floor II IL thrown
into heavy, powerful cruahers, aud
after being subjected 10 the scfunehing
aud grinding process US performed by
n machine OF drilled iron, II IL con.
veyed to the third story OF the building
and thrown into the screens. That
| portion which IL not reduced to the
consistency OF dust IN returned to
cornish rolls In the second floor, and
after undergoing n thorough puiveriz.
alton Is again cent 10 the screens. These
differ In fineuess, but all accepted
material must pass through twenty
mesh screen, aud must therefore be- re-
ducei to powder. When this l. nc-
cOmpllshed II 10 carried 10 the ore bin
to await the mixing process. All
carrying OF material IL done auto
mstiCtlly, one OF the cOnveyers being
required 10 move the material dis.
lance " 100 feet.
Another element that enters into
the manufacture Of paving Is pure
| asphalt, or mineral pitch. The
deposit from which this Wasntch com
uany obtains this material Is nc
Parielte, thirty miles northwest Of
Fort Duchesne. IL is the only deposit
Of its kind known In the United
States, where ths asphaltum Is cneml.
cnlly pure. Its use Ia this form In for
varnishes for jipanned wne, etc. The
| Gils0nitc company nnd the Wasatch
company own all there In yot discover
/ ed. The asphaltum In melted to boil.
| ing heat Tor mixture with this pow
uerel asphaltic lime rock.
! The sand used in the composition IN
heated 10 900 degrees temperature, and
then the liquid nsphaltum, ground
hsphnltic hue rock anu sand are
! brought together In three.ton mixers,
where they are churned up by rapidly
revolving steel paddles until thorough
ly combined together in the desired
proportions. During this part OF
the process heat to 600 degrees
temperature is applied. by the
time this part OF the work is accom-
! pIished, anu tue whole reaches about
| the consistency OF melted sugar, the
manufacture OF paving asphalt is COM
completed, anu II Ia turned out OF tho
moulds prepared for use.
The WRsatch company laid the
pavement ON Richards avenue,
aud there lH quality has re-
received a good test, and 1t
has proven satisfactory. The COM
pany now has a contract OF some
niagnilude-that for the paving OF
East Temple street from South Temple
| to Third south, ami one block on each
side OF First and Second South streets.
Ii ran be safely said that with thu
material In It's possession, the Wasatch
Asphgltum company can manufacture
at It's new mill this finest asphaltum
for pavements that the world produces.