(a) A record of each blast shall be kept.
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Terms Used In Tennessee Code 68-105-107

  • Blast: means the act of detonating explosive materials joined by a shared initiation system and a single firing device. See Tennessee Code 68-105-102
  • Blaster: means a person qualified by reason of training, knowledge, experience and registration to fire or detonate explosives in blasting operations. See Tennessee Code 68-105-102
  • Charge: means a quantity of explosives that is to be detonated within a segregated position in the blast design. See Tennessee Code 68-105-102
  • Delay: means a period of time until detonation after application of energy to the ignition system. See Tennessee Code 68-105-102
  • Distance: means the actual distance in feet along ground contour to the nearest dwelling house, public building, school, church, commercial or institutional building normally occupied. See Tennessee Code 68-105-102
  • Explosives: means any chemical compound or other substance or mechanical system intended for the purpose of producing an explosion, or that contains oxidizing and combustible units or other ingredients in such proportion or quantities that ignition by detonation may produce an explosion, capable of causing injury to persons or damage to property. See Tennessee Code 68-105-102
  • Person: means an individual, public or private corporation, political subdivision, government agency, municipality, industry, copartnership, association, firm, trust, estate or other entity whatsoever. See Tennessee Code 68-105-102
  • Record: means information that is inscribed on a tangible medium or that is stored in an electronic or other medium and is retrievable in a perceivable form. See Tennessee Code 1-3-105
  • Weight: means the maximum weight of explosive, in pounds. See Tennessee Code 68-105-102
(b) All records, including seismograph reports, shall be retained at least three (3) years and shall be available for inspection and shall contain the following minimum data:

(1) Name of company or contractor;
(2) Location, date and time of blast;
(3) Name and signature of blaster on charge;
(4) Type of material blasted;
(5) Number of holes, burden and spacing;
(6) Diameter and depth of holes;
(7) Types of explosives used (trade name);
(8) Total weight of explosives used;
(9) Maximum weight of explosives and maximum number of holes per delay period;
(10) Method of firing with overhead diagram of the delay pattern;
(11) Direction and distance in feet to nearest dwelling house, public building, school, church, commercial or institutional building normally occupied, neither owned nor leased by the person conducting the blasting;
(12) Weather conditions;
(13) Type and height or length of stemming;
(14) Type of delay blasting caps used and delay periods used (trade name);
(15) Kind of mats or other forms of protection used;
(16) The person taking the seismograph reading shall accurately indicate the location of each seismograph used, and its distance from the blast;
(17) Name of person and/or firm analyzing the seismograph record;
(18) Name of driller;
(19) Type of material blasted and any anomalous or unusual conditions encountered during drilling;
(20) Location of holes not loaded or those requiring non-typical loading; and
(21) Documentation of measures taken to compensate for anomalous or unusual conditions.
(c) It is unlawful for any person to make any false entry in any record required to be kept pursuant to this section.
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