Started in the company as a laborer. I worked my way through the ranks as follows: D operator - responsible for catching samples, running analysis on samples, and making product transfers. C operator - responsible for catching samples, running analysis on samples, operating steam strippers, operating a filter cake belt press, and other associated equipment. B operator - worked as an inside and outside operator, responsible for 5 fluidized exothermic reactors and multiple associated equipment. Also responsible for 5 distillation columns and associated equipment. Lead operator - ultimately responsible for the entire outside and inside operation of the entire unit.