Doing all 3 complete procedures require both transaxillary and supraclavicular incisions. I think the surgeons who remove the rib supraclavicularly do all 3 at once. I think the transaxillary rib guys prefer just doing partial scalenectomy (I've seen this called scalenotomy) and coming back later supraclavicularly for full scalenectomy only if necessary.

My surgeon said he has never had a need to perform the pec minor procedure.