Safety Milestone In December, 2007 Cottrell’s employees surpassed and continued two significant safety milestones: 1) Two consecutive calendar years without a “lost time injury” in the 2.5 Million man hours worked by Cottrell employees during this two year period. 2) Five consecutive months without a “recordable injury” in the 500,000+ thousand man hours worked by Cottrell employees during this period. Cottrell is proud of this outstanding safety accomplishment and it represents our overall commitment to safety in everything we do.