Communication & Documentation Flashcards
7 cards from real CES practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Communication & Documentation flashcards as text
When a blaster submits a Misfire Report to the mine operator, which detail is most critical for determining whether the misfire was due to equipment failure or procedural error?
Answer: The type of initiation system and connection method used
The initiation system type and connection method are the most diagnostic details for determining the root cause of a misfire.
Under MSHA regulations, a blasting record at a surface coal mine must be kept available for inspection for a minimum of:
Answer: 3 years
MSHA regulations (30 CFR Part 56/57) require that blasting records be retained and available for inspection for at least 3 years.
A magazine keeper discovers that the quantity of electric detonators recorded in the log does not match the physical count. After verifying the count, the next step is to:
Answer: Report the discrepancy to the ATF within 24 hours if theft is suspected
If theft or unexplained loss is suspected after verifying the count, ATF must be notified within 24 hours per federal regulations.
Which of the following is the correct sequence for communicating an imminent blast to all required parties?
Answer: Notify authorities, post warning signs, sound signals, then detonate
Proper protocol requires advance notification to authorities and posting of warning signs before audible signals are given and detonation occurs.
The term 'chain of custody' in explosives documentation refers to:
Answer: The traceable record of who possessed explosive materials from acquisition to use or disposal
Chain of custody documents every transfer of possession of explosive materials, ensuring full accountability from manufacturer to end use.
A written blast design plan submitted to a regulatory authority must typically specify the maximum instantaneous charge (MIC) primarily because it determines:
Answer: The maximum ground vibration levels that will be generated
The MIC is the primary variable controlling peak ground vibration levels and is required by regulators to verify compliance with vibration limits.
When a blasting contractor works across multiple states, their ATF license is:
Answer: Valid nationwide, but local permits may still be required
ATF licenses are federal and valid nationwide, but individual states may impose additional licensing or permit requirements.