Industry Information Hewitt-Robins History The story of the company that developed the first practical conveyor for moving heavy abrasive materials utilizing steel idler rollers and rubber covered belting. YeloRoll Flyer Read about YeloRoll. Innoveyor compares YeloRoll, conveyor roll, titanium enriched m-PVC roll, to HDPE rollers and shows why YeloRoll is the better solution! Read more Important Links MSHA – an agency of the US Deptartment of Labor which oversees mining safety in the US. MineExpo International – Mining Trade Show sponored by the National Mining Association. CEMA – Trade Association serving North American manufacturers and designers of conveyor equipment.