Regulations last checked for updates: May 19, 2024

Title 30 - Mineral Resources last revised: May 15, 2024
§ 15.21 - Tolerances for ingredients.

Tolerances for each ingredient in an explosive, which are expressed as a percentage of the total explosive, shall not exceed the following:

(a) Physical sensitizers: The tolerances established by the applicant;

(b) Aluminum: ±0.7 percent;

(c) Carbonaceous materials: ±3 percent; and

(d) Moisture and ingredients other than specified in paragraphs (a), (b), and (c) of this section: The tolerances specified in Table II.

Table II—Tolerances for Moisture and Other Ingredients

Quantity of ingredients (as percent of total explosive or sheath) Tolerance percent
0 to 5.01.2
5.1 to 10.01.5
10.1 to 20.01.7
20.1 to 30.02.0
30.1 to 40.02.3
40.1 to 50.02.5
50.1 to 55.02.8
55.1 to 100.03.0
authority: 30 U.S.C. 957.
source: 53 FR 46761, Nov. 18, 1988, unless otherwise noted.
cite as: 30 CFR 15.21