skills · Vibration, noise, dust · teach
Instrumentation: geophones, sound level meters, triggers, ranges. Know your instrument's floor and ceiling — it decides what "not recorded" means.
~10 h study · original notes on this site
Instrumentation: geophones, sound level meters, triggers, ranges. Know your instrument's floor and ceiling — it decides what "not recorded" means.
Know the floor and ceiling of the box you brought. A silent trace can mean the instrument was deaf.
Write the neighbour limit before the first hit.
Produce an artefact before you tick: a written note, a marked drawing, a cited figure, a filed hold. Watching is learning. The tick means applied.
Study notes. Not a certificate. Not legal advice. We never design the charge, spacing, or the cut. Follow the law and the named people where you work.
Before you tick
- Receptor named.
- Limit written.
- Instrument range known.
Write the neighbour limit before the first hit.