The multiemployer pension plan community has been waiting for implementation details since February; they're finally here. : BRIDGEWATER, MA - SEPTEMBER 11: Workers stack wet bricks that were just formed at the Stiles and ... [+] Hart Brick Co. in Bridgewater, MA on Sep. 11, 2019. For more than a century, workers at the Stiles and Hart Brick Co. have been mining clay and firing it in kilns at temperatures of up to 1,950 degrees to make the classic Boston paver bricks used at far-flung construction sites. The states last brickyard has survived wars, economic downturns, and changing architectural styles.