New: plumbobAll contenthive-129948krhive-196917steemzzanhive-183959hive-166405hive-185836uncommonlabhive-150122hive-183397hive-144064hive-180932hive-101145bitcoinhive-188619photographyhive-193637hive-124908hive-163341lifekrsuccesshive-139150hive-184714hive-103599TrendingNewHotLikersanswerswithjoe (67)in manholecover • 6 years agoDid The US Accidentally Blast A Manhole Cover Into Space? | Random ThursdayIn 1957, the United States began testing nuclear weapons underground in the desert outside of Las Vegas, Nevada as part of Operation Plumbbob. One underground test, Pascal B, may have put the first…