Bituminous Roadways is Minnesota’s primary shingle processor. The firm has been
processing shingles and producing RS-HMA for about three years. The firm charges
the manufacturer $15.00 per ton to accept the shingles. Processing is performed with
two Rex “Maxi-grind” rotary drum grinders. Grinding is made easier if the shingles are
allowed to age for a year. Just that amount of oxidation hardens the shingles enough to
minimize agglomeration of the shreds. RS-HMA produced by Bituminous Roadways is
used primarily for commercial and residential paving, such as driveways and parking
lots. [11]