Document DGBaQoZJVxN7p9b6v4QoZQQpO
fgfl
Cc\
UNITID *TATIS MININAL PRODUCTS COMPANY
QMmoiitoiM
STAMMCPC. NCW JUSST 07S7*
Tat MMSOO A#w CM* CAFCOMSUU.
17, 1*7
SpsmjaS itlaaral Titer ifaMiftetarsm
Kr f* ?* ?#xtels tf KiatTml Pratfsste
Nr* J. H* aitttep, Bal**fefwaUl
A. Ha Tote, teite 4 Soslsr fi-if H* u Larisa, Aateataaprs? Corporvtdaa
Mr* 2* Seytr, CstelsduTi rflskinlMi % tiA
Subiaotf donate Titer 3oat Taste
-rtoLoaari ar* tea ootdaa of tfaa latest tart rrraite fro*
* *ad Aaaooista* os tea fifth aarlaa of sprajad
Ater 4urt tMt data* Jaa#art 11, 1967*
T)ta raaulta appear too goc4
for test raaaco 1% is
3ugc**ted that iaioraatloe sot bo ralaosad tll it Is dls*aaso4
at tea aa*tlnr aetWKfelte for Sertaater 7*
Tha iarriaa for #552*00 is teiag sari ta Traasursr Bart
Larisa# Tte isrcioa braatedoas is apparently #200,00 fas for Mr*
*, #100,00 for as assistant, $210.00 far tea 21
Ukt&,
#12*00 for Isaah*
3i2*raly 7sarp,
BSS/aa
T %taniT'Ttr'Stcupf
71aa ?raal4*st - ^nasarnh
*si (Isas ttainanraa) fir. X, Llaff, telte A lusLar Mr, H* viIm, 3aldvi-fiirt-2m
WIUK t||l tM 01H|6 nunc .tODwCM *M HU Ml \9m f|*HUtu*|
UIWuliM UinK l'!Kl 'W-a( HOI*nO 8iinj **8 C8Jv*U ll(l
1AMR SW5j*j|
**4(M(t VtUtft MU NOMIt >M KUNCWmc
W IwikfaKI
.UMIlit*
WUliam H Bradky and Associates
KJIVtJtOKMZKTAL.HEALTH COHSUITAKTS It GREEN STRUT NEWARK, N. J, 07102
201 622-4240
August 11, 1967
Sprayed Mineral Fiber Manufacturers Association, Suite 2300 One Wall Street New York, Sew York 10005 -
Inc.
Re: ENVIRONMENTAL HEALTH INVESTIGATION
A series of simultaneous air samples were collected during a ten-minute, mineral, fiber, spray application using the products of four manufacturers. The samples 'were collected at head level at the spray operator's statlon, and then in a line perpendicular to the surface being sprayed at distances of ten feet, twenty feet and forty feet behind the operator* Prior to the collection of air samples, the operator had sprayed a wall and a ceiling for a period of twenty minutes.
Air samples were analyzed for the presence of res pirable-size asbestos fibers* The testing was conducted July 26, 1967 at the Smith and Kanzler Company plant in
DLinden# Hew Jersey. Manufactured products A# C# and B
were tested in that order at a spray concentration of ten * pounds fiber to ten pounds water. A twelve-hole spray nozzle was used*
Following the spraying of the first three products, and after a one-hour lunch breaX, product B was sprayed at the 10-pound fiber to 10-pound water ratio. Then, using the twenty-minute, spray period and ten-minute, sampling period, product B was sprayed at a ratio of 10 pounds fiber to 7.5 pounds water and again at a ratio of 10 pounds fiber and 5 pounds water.
Spraying and Testing Schedule
Time 10:50 a.m* 11:10 a.m.
11:20 a.m. 11:30 a.m. 11:50 a.m.
12:00 noon
Test Data Began spraying Product A* Continued spraying Product A. Began air sampling.
2nd of air sampling.
Began spraying Product C-
Continued spraying Product C. Began air sampling.
2nd of air sampling.
v
c r
ir
t i-
r
* c
(
Spraying and Tasting Schedule - Cont'd
Time 12x03 p.a. 12:23 p.a.
12:33 p.a. 1:37 Pa 1:57 p.a.
2:07 p.a. 2:08 p.a.
2:28 p.a.
2:38 p.a. 2:41 p.a.
3:01 p.a.
3:11 p.a.
Test Data
Began spraying Product D.
Continued spraying Product D. Began air sampling.
2nd of air sampling.
Began spraying Product B.
Continued spraying Product B. Began air sampling.
End of air sampling.
Began spraying Product B at 10 to 7.5 ratio.
Continued spraying Product B. Began air sampling.
End of air sampling.
Began spraying Product B at 10 to 5 ratio.
Continued spraying Product B. Began air sampling.
End of air sampling.
3-
Results of Past Counts
Product
Millions of Particles Per Cubic Poot of .Air
Source 10 Peet 20 Peet 40 Peet
A
4.1
3.2
2.6
2.0
C
4.4
3.3
2.7
2.1
D
4.6
3.3
2.6
1.9
B
5.3
4.6
3.1
2.5
B (10 to 7.5)
B (10 to 5)
5.9 6.2
5.2 5.5
3.3 3.4
2.7 2.8
Identification of Products
A - Asbestospray B - Pyrospray C - Cafco D - Spraycraft
4
Summary
Produet B with lower water ratios produces store .asbestos fibers as well as elays when s. rayed. Products Af Bf C and D did not present a respirable, asbestos-dust, inhalation hazard when sprayed at a 1 to 1 ratio under the conditions of the test. Product B was borderline, however.
,,Xt is advisable that spray op< atora wear respiratory protection while at work as the conditions of spraying in confined quarters may be encountered.
Zt is advisable that spray operators 9ar respiratory
protection when spraying Product B at the lower fiber to water ratios, (10 to 7*5 and 10 to 5)
t7o respirable dust protection is considered necessary for worsen located ten feet or more away from sprayed, mineral, fiber applications that use asbestos fibers when conducted in semi-cpen areas.
WRS/bg
w ? \S7 v//
William R Bradla^^.
5