Document wrvLLeGOwzqxp0QBdmoYrZw1Q
Ext. 269
To:
ErcTH IRON WORKS CORPORATION-' Beth. Maine
TECHNICAL DEPARTMENT Chemical and Metallurgical Laboratory
A. L. Haskins
Report of Analysis #L5790
PLAINTIFFS EXHIBIT
Date:
U-557
12 Sept, i960
Subject: Ref:
Dust Survey - Piping Insulation Materials (a) BIW Lab Reports of Analysis Nos. L5755 and L5768
1. The Laboratory has completed the retesting of the five samples tested under reference (a) using the same procedure and conditions.
2. A total of three, complete tests have been performed on each sample.
3. Average test results, in millions of particles per cubic foot
(MPPCP), of total airborne dust are tabulated below:
k
a.
Unibeetoa Thermos11 Eaylo Cals111te Thermobeatos
MPPCP_______ MPPCP MPPCP MPPCP
MPPCP
Ambient
6.6 7.1 a.3 4.9
4.9
3rd Cut
28.5
46.1
19.7
30.9
15.0
6th Cut
28.5
52.9
17.4
34.8
19.5
1 min. after
7.3
31.6 7.3 9.6
4.4
Tested with cloth removed
LET:P_
CC: ALH(2)-' LABeere LET
Chief Chemls^ & Metallurgist
42 008 0179
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