ATF

Sample Block


Bureau of Alcohol, Tobacco, Firearms and Explosives
Explosives

555.220 Table of distances of ammonium nitrate and blasting agents from explosives or blasting agents

Ammonium nitrate, by itself, is not considered to be a donor when applying this table. ammonium nitrate (AN), ammonium nitrate-fuel oil (ANFO) or combinations thereof are acceptors. If stores of AN are located within the sympathetic detonation distance of explosives or blasting agents, one-half the mass of the AN is to be included in the mass of the donor.

Use the table at § 555.218 to determine required minimum distances from inhabited buildings, passenger railways, and public highways.

Donor weight (pounds) Minimum separation distance of acceptor from donor when barricaded (feet) Minimum thickness of artificial barricades (inches) - if unbarricaded, multiply the distance by six
Over Not over Ammonium nitrate Blasting agent
0 100 3 11 12
100 300 4 14 12
300 600 5 18 12
600 1,000 6 22 12
1,000 1,600 7 25 12
1,600 2,000 8 29 12
2,000 3,000 9 32 15
3,000 4,000 10 36 15
4,000 6,000 11 40 15
6,000 8,000 12 43 20
8,000 10,000 13 47 20
10,000 12,000 14 50 20
12,000 16,000 15 54 25
16,000 20,000 16 58 25
20,000 25,000 18 65 25
25,000 30,000 19 68 30
30,000 35,000 20 72 30
35,000 40,000 21 76 30
40,000 45,000 22 79 35
45,000 50,000 23 83 35
50,000 55,000 24 86 35
55,000 60,000 25 90 35
60,000 70,000 26 94 40
70,000 80,000 28 101 40
80,000 90,000 30 108 40
90,000 100,000 32 115 40
100,000 120,000 34 122 50
120,000 140,000 37 133 50
140,000 160,000 40 144 50
160,000 180,000 44 158 50
180,000 200,000 48 173 50
200,000 220,000 52 187 60
220,000 250,000 56 202 60
250,000 275,000 60 216 60
275,000 300,000 64 230 60