Since when has a brick company come out of Silicon Valley? Calstar Products is making a brick using coal fly ash that needs 85 percent less energy to produce. Martin LaMonica is a senior writer ...

Less polluting methods have reduced coal use and waste while workers still struggle for more wages and better work conditions ...

Frank Roethel runs his hands along the boathouse’s interior walls. The exposed brick is smooth and cool to the touch; in contrast to the outside cratered from nearly 30 years of wind, rain and snow.

An effective strategy for distribution of fly ash is the need of the hour as effective utilisation avenues are already established, commensurating with the fly ash generation, says N. Kalidas, ...