F o ld in g F in s
of accumulation of HMX and TNT
on an active firing range, where
W a rh e a d B o d y
P ro p e lla n t C h a rg e
the munition fired was a melt-cast
Fuse
explosive composed of a 70:30
mixture of HMX and TNT.
Ig n ite r
EXPERIMENTAL
Sampling site description
M o to r B o d y
E xp lo sive
and sample collection
(O cto l, 7 0 :3 0 H M X :T N T )
C o m p A 5 B o o ste r
This study was conducted in
(R D X )
September 1996 at an antitank
Figure 3. Diagram of 66-mm M72 rocket fired at CFB-Valcartier.
range at the CFB-Valcartier, Que-
bec, near Quebec City (Fig. 2). This
is an active firing range where rockets filled with
0.3 kg (0.66 lb) of the melt-cast explosive octol
(70% HMX:30% TNT) have been fired on a
spectroscopy confirmed the 70:30 ratio of HMX
routine basis for over 20 years (Fig 3). Firing at
and TNT.
the antitank range had occurred the week prior to
The firing range is about 100 ha in size and has
four target tanks, two in a fairly level region of
this field sampling study, and the ground surface
the site (labeled tanks C and D) near the access
was littered with shell fragments, pieces of plastic
and ceramic, springs, fins, and other debris. Some
road. Sampling studies were conducted in an area
encompassing these two target tanks as shown in
of the rockets were unexploded, but sheared open
Figure 4. The sandy, well-drained soil in front of
DREV HMX
X
Mean of all samples in grid,
16
less duplicates
Grid D7
54
183
Location of sample
Wheel for D2B
Composite = 812
100
Composite = 176
X = 770
Location of duplicate (d)
X = 158
324
111
A
B
321
D
C
Grid D4
Grid D5
Grid C4
Grid C5
Grid D1
Grid D2
A
B
A
B
A
B
A
B
A
B
A
B
D
C
D
C
D
C
D
C
D
C
D
C
Composite
Composite
Composite
Composite
Composite
Composite
TANK C
TANK D
= 1640
= 180
= 80
= 212
= 479
= 41
X = 242
X = 83
X = 227
X = 428
X = 57
X = 1450
A
B
Grid D8
Composite = 322
D
C
Ad
Bd
Cd
Dd
A
B
C
D
X = 394
1910
1220
721
995
930
2160
Grid C4
A
B
461
79
129
301
Grid C5
Grid D9
120
121
32
59
Grid D1
Composite = 35
D
C
279
271
316
273
41
138
Grid D2
X = 56
631
393
148
254
680
Grid D4
53
33
86
54
Grid D5
A
B
209
1000
729
747
1140
Grid D7
Grid D10
878
286
202
208
Grid D8
Composite = 4.7
10
180
118
20
26
14
Grid D9
D
C
25
4.1
5.1
2.4
6.4
Grid D10
X = 9.8
Figure 4. Sampling area at CFB-Valcartier firing range site, showing HMX concentrations from on-site measure-
ments.
3