A detailed record of each surface blast shall be prepared
immediately by the certified blaster. Records shall be maintained at the mine
site for three years and subject to inspection by the division mine inspectors.
Records shall contain the following information:
1. Name of company or contractor;
2. Location, date, and time of
blast;
3. Name, signature, and
certification number of the certified blaster in charge;
4. Type of material blasted;
5. Number of holes, and burden and spacing
for each hole;
7. Types of explosives used;
8. Total amount of explosives used;
9. Maximum amount of explosives per delay
period of eight milliseconds or greater;
10. Method of firing and type of
circuit;
11. Direction and distance
in feet to nearest dwelling house, public building, school, church, commercial
or institutional building neither owned nor leased by the person conducting the
blasting;
12. Weather conditions
(including such factors as wind directions, etc.);
13. Height or length of stemming for each
hole;
14. Whether mats or other
protections were used;
15. Type of
detonators used and timing of detonation for each detonator used;
16. The person taking the seismograph reading
shall accurately indicate exact location of seismograph, if used, and shall
also show the distance of seismograph from blast;
17. Seismograph records, including:
a. Name and signature of the person operating
the seismograph;
b. Name of the
person analyzing the seismograph record; and
c. Seismograph readings;
18. When a permanently installed seismograph
is used to prove compliance, the record shall indicate the:
a. Name of the person and company that
installed the seismograph; and
b.
Name, signature, and company affiliation of the person validating the
authenticity of the seismic data collected and transmitted by the permanent
unit.
The information should be attached to the blast record as
soon as it is available, but in no instance later than five working days after
the shot; and
19. All anomalies or abnormalities occurring
during the execution of the blast and actions taken to correct or address
them.
Notes
4
Va. Admin. Code §
25-40-810
Derived from
VR480-05-1.2 § 6.4, eff. July 19, 1989; amended, Virginia Register Volume
14, Issue 17, eff. July 1, 1998; Volume 25, Issue 20, eff. July 8, 2009;
Amended,
Virginia
Register Volume 35, Issue 04, eff.
11/30/2018.
Statutory Authority: §§
45.1-161.3,
45.1-161.294, and
45.1-161.305 of the Code of
Virginia.
