I've read a couple of papers by Nicholas Bloom on operational management. I don't know if this material is covered in business school, but it could be because it sounds like it is (a) book-learning and (b) pretty general, such as keep the floor clear. In particular, he ran a randomized controlled experiment (ar) of consulting advice for Indian firms and it was pretty valuable. Presumably he chose Indian firms because they aren't already following this advice (ar) (OB).