Black, Sivalls & Bryson (Canada) Limited (BS&B) designs and builds process equipment systems and plant for the oil and gas, chemical and refining industries. BS&B's wide range of expertise covers separation, gas and liquid treating systems, Sulphur recovery topping and stabilization systems, direct and indirect firetube heating units and other processes, developed initially for the oil and gas industry. BS&B's desulfurization and Sulphur recovery technology has applications in the refining, petrochemical, steel & pollution control industries.