§ 33.21. Modification of test equipment.
29 words·~1 min read·
/us/cfr/t30/s§ 33.21·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
For test purposes the unit or system may be modified, such as by attaching instruments or measuring devices, at MSHA's discretion; but such modification shall not alter its performance.