Muriatic acid, also known as hydrochloric acid, is often found in pool chemicals and can be poisonous if inhaled or ingested, according to the U.S. Centers for Disease Control and Prevention.

LONGMEADOW, Mass. (AP) — Two children suffered what were described as “burn-like injuries” after playing on slides that had been doused with acid at a Massachusetts park, authorities said.

IN the early sixties, there was something far more lethal than the ‘killer’ canal on farmer Joseph Hartley’s land at Barden in Burnley. It was a pool of blood-red, concentrated acid, which ...