Authority: IC 22-11-14.5-3; IC 22-13; IC 35-47.5-4-4.5

Affected: IC 35-47.5-2-13; IC 35-47.5-5-11

Sec. 1. The following definitions apply throughout this article:

1. (1) "Airblast" means the noise and concussion originating from a blast, usually produced by the detonation gases venting to the atmosphere.
2. (2) "Approved testing agency" means a person who administers the required examination for licensed regulated explosive use-blaster in accordance with 675 IAC 26-2-4.
3. (3) "Blast" means the controlled detonation of explosives or explosive materials to break or move, or both, rock or other materials.
4. (4) "Blast design" means the process of calculating blasthole diameter and layout, detonator timing, regulated explosives and blasting agent selection and consideration of geology and topography to create a blast, within accepted safety guidelines, that delivers the desired quantity and quality of broken material.
5. (5) "Blast initiation system" means the combination of detonators, detonation systems, and regulated explosives used to initiate a blast.
6. (6) "Boosting" means the use of a unit of explosives or blasting agent to perpetuate or intensify an explosive reaction.
7. (7) "Borehole" means a drilled hole, usually in rock, into which regulated explosives are loaded for blasting.
8. (8) "Flyrock" means dirt, mud, stone, fragmented rock, and other solid material propelled through the air from a blast.
9. (9) "Ground vibration" means a shaking of the ground in a specific wave form originating from a blast.

10. (10) "Licensed regulated explosive use-blaster" means an individual who:

    1. (A) supervises or directs and performs the loading and firing of explosives materials;
    2. (B) is an employee of a licensed regulated explosive use-operator; and
    3. (C) is licensed by the office of the state fire marshal under this rule.
11. A licensed regulated explosive use-blaster may supervise or direct and perform any type of blasting.

12. (11) "Licensed regulated explosive use-operator" means the person who:

    1. (A) takes possession of a regulated explosive in this state for the purpose of detonation under the person's direction or control;
    2. (B) is the employer of a licensed regulated explosive use-blaster; and
    3. (C) holds a licensed regulated explosive use-operator permit issued by the office of the state fire marshal under this rule.

13. (12) "Person means" any of the following:

    1. (A) An individual.
    2. (B) A partnership.
    3. (C) A copartnership.
    4. (D) A company.
    5. (E) A corporation.
    6. (F) A limited liability company.
    7. (G) An association.
14. (13) "Proctor" means an individual who is an employee of an approved testing entity.
15. (14) "Regulated explosive" has the meaning set forth in IC 35-47.5-2-13.
16. (15) "Stemming" means the inert material, such as drill cuttings or crushed stone, used in a blasthole to confine the gaseous products of detonation.
17. (16) "Tamping" means the process of compressing the stemming or regulated explosive in a blasthole.

(Fire Prevention and Building Safety Commission; 675 IAC 26-1-1; filed Sep 21, 2005, 1:30 p.m.: 29 IR 489, eff Dec 1, 2005; readopted filed Aug 4, 2011, 8:35 a.m.: 20110831-IR-675110254RFA; readopted filed Mar 10, 2017, 9:37 a.m.: 20170405-IR- 675170005RFA; readopted filed May 11, 2023, 2:22 p.m.: 20230607-IR-675230104RFA)