29 CFR 1926.905 - Loading of explosives or blasting agents.

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There are 3 Updates appearing in the Federal Register for 29 CFR 1926. View below or at eCFR (GPOAccess)
§ 1926.905 Loading of explosives or blasting agents.
(a) Procedures that permit safe and efficient loading shall be established before loading is started.
(b) All drill holes shall be sufficiently large to admit freely the insertion of the cartridges of explosives.
(c) Tamping shall be done only with wood rods or plastic tamping poles without exposed metal parts, but nonsparking metal connectors may be used for jointed poles. Violent tamping shall be avoided. The primer shall never be tamped.
(d) No holes shall be loaded except those to be fired in the next round of blasting. After loading, all remaining explosives and detonators shall be immediately returned to an authorized magazine.
(e) Drilling shall not be started until all remaining butts of old holes are examined for unexploded charges, and if any are found, they shall be refired before work proceeds.
(f) No person shall be allowed to deepen drill holes which have contained explosives or blasting agents.
(g) No explosives or blasting agents shall be left unattended at the blast site.
(h) Machines and all tools not used for loading explosives into bore holes shall be removed from the immediate location of holes before explosives are delivered. Equipment shall not be operated within 50 feet of loaded holes.
(i) No activity of any nature other than that which is required for loading holes with explosives shall be permitted in a blast area.
(j) Powerlines and portable electric cables for equipment being used shall be kept a safe distance from explosives or blasting agents being loaded into drill holes. Cables in the proximity of the blast area shall be deenergized and locked out by the blaster.
(k) Holes shall be checked prior to loading to determine depth and conditions. Where a hole has been loaded with explosives but the explosives have failed to detonate, there shall be no drilling within 50 feet of the hole.
(l) When loading a long line of holes with more than one loading crew, the crews shall be separated by practical distance consistent with efficient operation and supervision of crews.
(m) No explosive shall be loaded or used underground in the presence of combustible gases or combustible dusts.
(n) No explosives other than those in Fume Class 1, as set forth by the Institute of Makers of Explosives, shall be used; however, explosives complying with the requirements of Fume Class 2 and Fume Class 3 may be used if adequate ventilation has been provided.
(o) All blast holes in open work shall be stemmed to the collar or to a point which will confine the charge.
(p) Warning signs, indicating a blast area, shall be maintained at all approaches to the blast area. The warning sign lettering shall not be less than 4 inches in height on a contrasting background.
(q) A bore hole shall never be sprung when it is adjacent to or near a hole that is loaded. Flashlight batteries shall not be used for springing holes.
(r) Drill holes which have been sprung or chambered, and which are not water-filled, shall be allowed to cool before explosives are loaded.
(s) No loaded holes shall be left unattended or unprotected.
(t) The blaster shall keep an accurate, up-to-date record of explosives, blasting agents, and blasting supplies used in a blast and shall keep an accurate running inventory of all explosives and blasting agents stored on the operation.
(u) When loading blasting agents pneumatically over electric blasting caps, semiconductive delivery hose shall be used and the equipment shall be bonded and grounded.
[44 FR 8577, Feb. 9, 1979; 44 FR 20940, Apr. 6, 1979, as amended at 58 FR 35184, June 30, 1993]

Title 29 published on 2013-07-01

The following are only the Rules published in the Federal Register after the published date of Title 29.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-04-11; vol. 79 # 70 - Friday, April 11, 2014
    1. 79 FR 20316 - Electric Power Generation, Transmission, and Distribution; Electrical Protective Equipment
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      DEPARTMENT OF LABOR, Occupational Safety and Health Administration
      Final rule.
      The final rule becomes effective on July 10, 2014. (Certain provisions have compliance deadlines after this date as explained later in this preamble.)
      29 CFR Parts 1910 and 1926

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United States Code

Title 29 published on 2013-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 29 CFR 1926 after this date.

  • 2014-04-15; vol. 79 # 72 - Tuesday, April 15, 2014
    1. 79 FR 21164 - Cranes and Derricks in Construction: Operator Certification
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      DEPARTMENT OF LABOR, Occupational Safety and Health Administration
      Notice of informal public hearing.
      Informal public hearing: The informal public hearing will be held on Monday, May 19, 2014, at 9:30 a.m. in the auditorium of the U.S. Department of Labor, 200 Constitution Avenue NW., Washington, DC 20210. Notice of intention to appear: Each person who wishes to testify at the hearing must submit a notice of intention to appear by April 25, 2014. Each person who files a notice of intention to appear may submit a written copy of additional comments to the record before or during the hearing for inclusion in the hearing record. Organizations may submit a single notice of intention to appear regarding multiple members of that organization, but the notice must list the name, occupational title, and position of each individual who plans to testify. In addition, all notices must also include the following information: (1) An email address or other contact information for receiving additional information about the hearing; (2) Name of the establishment or organization, if any, that each individual represents; (3) A brief summary of any documentary evidence each individual plans to present.
      29 CFR Part 1926