MILWAUKEE TOOL
13135 West Lisbon Road • Brookfield WI 53005 • 262-781-3600
9/22/2022
29 CFR 1926.1153
Milwaukee® OSHA® Compliance Solutions
To Whom It May Concern,
Milwaukee®, in partnership with the Industrial Hygiene Sciences, LLC, has conducted testing on the Milwaukee
SDS Plus HAMMERVACTM Dedicated Dust Extractors. Results show that the 2916-DE M18 FUEL™
HAMMERVAC™ 1-1/4" Dedicated Dust Extractors are below the Permissible Exposure Limit (PEL) as
described by OSHA 29 CFR 1926.1153 assuming they are used in accordance with manufacturer’s instructions
Testing results and procedures are outlined below:
Unit Tested
Average
Holes Drilled
Average Sample
Duration (Minutes)
Averate % Silica
(Quartz) in Sample
Average Respirable
Cyrstalline Silica
Concentration (µg/m3)
OSHA PEL in
2912.1153
2916-DE
55
60
6.93%
3.33 µg/m3 TWA
50 µg/m3 over an
15 hour period
• All drilling was performed downward using a Milwaukee Rotary Hammer and a Milwaukee
HAMMERVAC
TM
Dedicated Dust Extractor.
• The hole size was 3/4” in diameter and 4” deep.*
• Test procedure included both the drilling of holes and a method of emptying the dust box:
o The dust box on the extractor was emptied every 10 holes
o The dust box and filter were emptied by being connected to a dust extraction system
• Concrete blocks were poured from a 5000 PSI concrete mix.
• The room size 10ft x 16ft x 16ft
• The room surfaces were wiped down between trials to ensure accurate measurements
• Samples were analyzed using OSHA ID-142 by the Wisconsin Occupational Health Laboratory, an AIHA
Accredited laboratory. The sampling method used meets the definition of respirable crystalline silica in
1926.1153 (a) and Appendix A of the OSHA Respirable Crystalline Silica Standard (1926.1153)
• The Time Weighted Average (TWA) was calculated assuming zero exposure to respirable crystalline
silica for the non-sampled portion of a 480 minutes (8 hour) shift. Longer exposure times, assuming that
the dust exposures would be similar to the those collected in these trials, would likely result in higher
TWAs. Factors that would affect actual user exposures include, but are not limited to, the ventilation and
air flow patterns in the work space, the presence of other respirable silica dust generating activities in the
area, the frequency of and method used to empty the extractor, and the number and depth of the holes
drilled.
*A 3/4” drill bit reflects the highest dust generating application, suggesting that other bit sizes would also be
compliant when using the Milwaukee 2916-DE M18 FUEL™ HAMMERVAC™ 1-1/4" Dedicated Dust
Extractor.
• Details on how to properly implement the 2916-DE as part of a completed exposure plan are outlined
below.
Maximum Number of Holes per Day**
Frequency of Need to Empty Dust Box***
Hole Depth
Hole Diameter
3/16”
¼”
3/8”
½”
5/8”
¾”
7/8”
1”
1-1/4”
1”
640
360
160
90
58
40
29
23
18
1-1/2”
427
240
107
60
38
27
20
15
12
2”
320
180
80
45
29
20
15
11
9
2-1/2”
256
144
64
36
23
16
12 9 7
3”
213
120
53
30
19
13
10 8 6
3-1/2”
183
103
46
26
16
11 8 6
5
4”
160
90
40
23
14
10 7 6
4
4-1/2”
142
80
36
20
13 9 7 5 4
5”
128
72
32
18
12 8 6 5 4
5-1/2”
116
65
29
16
10 7 5 4 3
6”
107
60
27
15
10 7 5 4 3
6-1/2”
98
55
25
14 9 6 5 3
3
7”
91
51
23
13 8 6 4 3
3
7-1/2”
85
48
21
12 8 5 4 3
2
8”
80
45
20
11 7 5 4 3
2
It is the responsibility of the user to operate the tool in accordance with manufacturer’s instruction. For the latest
listings of approvals, visit milwaukeetool.com. For technical or service assistance, contact Milwaukee Customer
Service at 1-800-729-3878.
* These calculations are offered for reference and are calculated values based on previously recorded test data.
** The user must drill the same number or fewer holes than those listed above for the given application in order to
be considered compliant with the objective data clause of 29 CFR 1926.1153 OSHA regulation on crystalline
silica dust.
*** The dust box needs to be emptied out at or before the numbers specified above in order to be considered
compliant with the objective data clause of 29 CFR 1926.1153 OSHA regulation on crystalline silica dust.
Hole Diameter
Hole Depth
3/16”
¼”
3/8”
½”
5/8”
¾”
7/8”
1”
1-1/4”
1”
41,250
23,203
10,313
5,801
3,713
2,578
1,894
1,450
1,146
1-1/2”
27,500
15,469
6,875
3,867
2,475
1,719
1,263
967
764
2”
20,625
11,602
5,156
2,900
1,856
1,289
947
725
573
2-1/2”
16,500
9,281
4,125
2,320
1,485
1,031
758
580
458
3”
13,750
7,734
3,438
1,934
1,238
859
631
483
382
3-1/2”
11,786
6,629
2,946
1,657
1,061
737
541
414
327
4”
10,313
5,801
2,578
1,450
928
645
474
363
286
4-1/2”
9,167
5,156
2,292
1,289
825
573
421
322
255
5”
8,250
4,641
2,063
1,160
743
516
379
290
229
5-1/2”
7,500
4,219
1,875
1,055
675
469
344
264
208
6”
6,875
3,867
1,719
967
619
430
316
242
191
6-1/2”
6,346
3,570
1,587
892
571
397
291
223
176
7”
5,893
3,315
1,473
829
530
368
271
207
164
7-1/2”
5,500
3,094
1,375
773
495
344
253
193
153
8”
5,156
2,900
1,289
725
464
322
237
181
143
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