3M state that they do emit SOx as products of combustion on page 84, however, they do not actually given any numerical values on the emissions.

According to their report: "For many 3M manufacturing processes, NOx, SO2, CO, and PM are emitted as products of combustion. These pollutants are tracked and reported externally where required by federal, state, or local regulations for individual locations. 3M internally tracks all fuel usage and calculates the combustion emission rates using accepted emission factors.