The daily Gate City. [volume] (Keokuk, Iowa) 1855-1916, 1908-11-21
THE PREVENTION OF DUST,

fHE FNEAEN HIN l5f pGSJ-
''Dust Preventives by Provost
Hubbard. issued as Bulletin No 81
4 Z. s. office of public roads, is the
latest contribution 10 literature Oh
road construction and maintenance
Mr.. Hubbardis paper has been pre-
1 pared ID meet the growing demand by
road engineers for specific information
On the Important subject of dust pre-
vention He has made research Of
all literature on the subject supple
mentins this with the results OF act
nal experiments made by the Office Of
public roads Interest has been re
GENTLY reawakened in the problem uf
the prevention OF dust on countrT
highways. the well night universal
uss 81 the automobile being respUn
sible for the additional study and ex
ps-iments. Road engineers are nov
agreed that the automobile when NOV
ing al high speed is destructive to
macadam roads. the broad soft tires
lifting the rock and dust ann scatter
ing # over adjacent fields. 4 road
robbed OF this fine surface binding ma
terial Tetrogrades rapidly That IN
dictmenT now lies against the modern
motor car, hut on the other hand the
Introduction Of the machine has done
much To awaken III interest not
merely IN dust prevention mn in the
entire snb5ecl Of road Improvement
Therein the automobile Is entitled To
credit II Is supeTfiuons 70 add that
clouds Of dust are annoying, nor only
10 the users Of the highways. but fO
tha residents whose property borders
uTon them. and that they affec1 publir
health and aepreciaue the value u
pToperty
M Hubbard il his discussion Of
mstho5ls 81 overcoming this condition
divides the problem into fvo parts
arst BIZ applying materials that viii
hold the dust down and second By
adopting form Of road construction
thzt VIII reduce dust formation ard
the wear Of roads 70 minimum.
These ha saws max be attained by
-.tsalTurz-v anu by permanent
htullsrs-thuse under the temporary
classification being materials which
uust be frequently applied tbs --ps.e
manantH ones being tbs heavier M
tsrials which through nne implication
maintain the road surface II q dust
less condition for q season
The author describes the rnanufac-
on the differences between Tar from
cnke ovens. from gas plants. refined
coal 5ar and watergas rat 4 chanteT
on Tie application al tars follows Rnd
brings ont the fact that the painting
Of road surfaces with tar was consid
cred N France az early as 1866 Al
though the work was not begun
earnest until 1902. The chapter csn
tains clear directions for apnivins tbs
material 70 the road, both usea as 9
palliative and fur use II permanent
construction Much data is given as
70 eost and quantities Ut materials
and examples ara cited OF SUCCESS IA
roads butt bv the gic OF various tgrs
After the consideration OF 1ars. tire
author deals with ths Classification
ana properties Of ellis and gives the
location Of al fne producing fields II
tbs Tinted States He describes the
method Of refining OF end tha cila1
actsT 81 the residuun and draws con-
PARSONS between crude OF and ny
prodHcz o. tlle raanad oil. a caar1ar
dealing with water and sa1t solutions
intending calcium chloride foIluws
and ne PORTION Of the bulletin relattns
un materials terminates with caag-
~ OF temnora-v tar and ull binders
emissions and similar preparations
Ai- Hubbard concludes MS raa1is
81 calling attention Il the 1u7T1r1zlaes
d careful Selection ot dust prevznta
tires making valuable suggestions tov
tae choice OF materials tor treating
eouur-v roads suBurban and parb
ro2dH respectively He gives al -
hsustfTe explanation Of he methods
o. examination and outlines Tentative.
Specifications 10 the use Of dus-
representatives. TIE bulletin should
do much toward directing expert
mental worE II this important field
along proper lines