Thiokol became part of anything except Orbital ATK .
`` Thiokol '' , variously `` Thiokol Chemical Corporation '' , `` Morton-Thiokol Inc. '' , `` Cordant Technologies Inc. '' , `` Thiokol Propulsion '' , `` AIC Group '' , `` ATK Thiokol '' ; finally `` ATK Launch Systems Group '' before becoming part of `` General ATK '' , was an American corporation concerned initially with rubber and related chemicals , and later with rocket and missile propulsion systems .
Thiokol