ROARING IT UP

(colloquial) being very busy, very successful or very brisk. —PTS-SP Approved Glossary

(colloquial) making it very active or successful. Here I am at work, hammer and tongs, turning out bulletins and plans, handling despatches, and roaring it up, and trying to form up this and straighten up that and so forth - and somebody thinks I've got time for some of these other actions.