In March, the high cost of hydrofluoric acid and the interplay of rigid demand led to a slight price increase in the market.

A second chemical spill at Silfab Solar is being investigated Thursday morning, two days after another spill that’s prompted widespread calls for a state investigation into the Fort Mill site.

The Silfab Solar facility in Fort Mill paused operations Thursday following a hydrofluoric acid leak, and neighbors expressed ...

According to the state agency, a release of potassium hydroxide occurred on March 3, followed by a hydrofluoric acid leak on March 5.

State environmental regulators have taken the extraordinary step of halting all operations at the new Silfab Solar facility ...