MAA membership includes gravel pit owners, quarry operators, aggregate processors and truckers as well as equipment dealers, banks, insurance agencies and consulting firms that serve the aggregate industry.  44 percent of MAA  membership is comprised of companies with less than 5 employees, another 34% of our member companies have less than 35 employees, and the remaining 22% have 36 or more  employees.  Only a handful has more than 100 employees.