Can one conduct a data collection without PRA approval if fewer than 10 respondents are involved?

The PRA only applies to collections directed at 10 or more respondents, but with one important exception.  Any information requirement in a "rule of general applicability" is presumed to affect or potentially affect at least 10 respondents, even if MSHA expects there to be fewer respondents.  A rule should be considered to have general applicability unless you can demonstrate that it would be impossible for there ever to be 10 respondents.