The toxic smoke , heat , and the resulting human rush toward the main exit killed Killing 100 ; 230 were injured Bodily_harm and another 132 escaped Escaping uninjured .

On April 15 , 2013 , an envelope that preliminarily tested Testing positive for ricin , a highly toxic protein , was intercepted Preventing_or_letting at the US Capitol 's off-site mail facility in Washington , D.C .

On 2 June 1983 , the McDonnell Douglas DC-9-32 operating Being_in_operation the service developed Coming_to_be an in-flight fire behind the lavatory that spread Dispersal between the outer skin and the inner decor panels , filling Filling the plane with toxic smoke .

All but two of the hostages who died Death during the siege were killed Killing by the toxic substance pumped Self_motion into the theater to subdue the insurgents .

A later surface cleanup effort primarily tackled Resolve_problem leftover toxic materials .

The highly toxic substance made its way into and around the small towns located near the plant .