** Acetylene cylinders are filled by weight, not volume. The volume and pressure data shown is only illustrative and is subject to change from region to region, and may vary with changes in atmospheric temperature and pressure.
The Oregon Revised Statutes are the codified laws of the State of Oregon. The ORS is published every two years. Each edition incorporates all laws, and changes to laws, enacted by the Legislative Assembly through the odd-numbered year regular session referenced in the volume titles for that edition.
from Oregon Revised Statutes (2007) (2007) by The State of Oregon. Indirect supervision means supervision requiring that a dentist authorize the procedures and that a dentist be on the premises while the procedures are performed.