▁is ▁managed ▁by ▁the ▁ ▁Connecticut ▁Department ▁of ▁Energy ▁and ▁Environment al ▁Prote ction . ▁ ▁References ▁ ▁External ▁links ▁Mount ▁Bush nell ▁State ▁Park ▁Connecticut ▁Department ▁of ▁Energy ▁and ▁Environment al ▁Prote ction ▁ ▁Category : State ▁par ks ▁of ▁Connecticut ▁Category : P arks ▁in ▁L itch field ▁County , ▁Connecticut ▁Category : W ashington , ▁Connecticut ▁Category : Pro te cted ▁areas ▁established ▁in ▁ 1 9 1 6 <0x0A> </s> ▁The ▁End uring ▁Stock p ile ▁is ▁the ▁United ▁States ' ▁ar sen al ▁of ▁nuclear ▁weapons ▁following ▁the ▁end ▁of ▁the ▁Cold ▁War . ▁ ▁During ▁the ▁Cold ▁War ▁the ▁United ▁States ▁produced ▁over ▁ 7 0 , 0 0 0 ▁nuclear ▁weapons . ▁By ▁its ▁end , ▁the ▁U . S . ▁stock p ile ▁was ▁about ▁ 2 3 , 0 0 0 ▁weapons ▁of ▁ 2 6 ▁different ▁types . ▁The ▁production ▁of ▁nuclear ▁weapons ▁ended ▁in ▁ 1 9 8 9 , ▁and ▁since ▁then ▁existing ▁weapons ▁have ▁been ▁retired , ▁dis m ant led , ▁or ▁moth b alled . ▁, ▁the ▁End uring ▁Stock p ile ▁consisted ▁of ▁about ▁ 9 , 6 0 0 ▁weapons ▁of ▁ 1 0 ▁types . ▁, ▁about ▁ 3 , 0 0 0 ▁of ▁those ▁weapons ▁had ▁been ▁moved ▁to ▁the ▁lowest ▁read iness ▁level , ▁in ▁which ▁they ▁are ▁not ▁dis m ant led , ▁but ▁are ▁no ▁longer ▁in ▁active ▁service . ▁ ▁We ap ons ▁in ▁the ▁End uring ▁Stock p ile