CHARLOTTE, N.C. (AP) — Duke Energy’s chief executive on Thursday touted the company’s accomplishments over the past year, but some shareholders focused on a massive coal ash spill that coated 70-miles of a North Carolina River in toxic sludge.

Outside Duke’s headquarters, where investors gathered for the annual shareholders meeting, about 200 protesters criticized the spill, and the way the $50 billion company has handled the coal ash issue.