In some cases it is not clear if the height is absolute or relative to ground, for example, Plumbbob/John. For rocket bursts the ground level is "N/A".
^ Elevation is the ground level at the point directly below the explosion relative to sea level height is the additional distance added or subtracted by tower, balloon, shaft, tunnel, air drop or other contrivance. 
"~" indicates a likely pro-forma rough location, shared with other tests in that same area.
Some locations are extremely accurate others (like airdrops and space blasts) may be quite inaccurate.
^ Rough place name and a latitude/longitude reference for rocket-carried tests, the launch location is specified before the detonation location, if known. Historical time zone data obtained from the IANA time zone database. If the result is earlier than 00:00, add 24 hours and subtract 1 from the day if it is 24:00 or later, subtract 24 hours and add 1 to the day. ^ To convert the UT time into standard local, add the number of hours in parentheses to the UT time for local daylight saving time, add one additional hour. If test is canceled or aborted, then the row data like date and location discloses the intended plans, where known. The US also sometimes named the individual explosions in such a salvo test, which results in "name1 – 1(with name2)". A dash followed by a number indicates a member of a salvo event. Word translations into English in parentheses unless the name is a proper noun. ^ The US, France and Great Britain have code-named their test events, while the USSR and China did not, and therefore have only test numbers (with some exceptions – Soviet peaceful explosions were named). 
Storage-transportation safety experiment, measured plutonium dispersal risk. United States' Roller Coaster series tests and detonations The tests followed the Operation Storax series and preceded the Operation Niblick series. Instead, their purpose was to evaluate the distribution of radioactive particles in a " dirty bomb" scenario, or an inadvertent, non-nuclear detonation of a nuclear weapon, as well as to evaluate the effectiveness of storage structures in containing the explosion and the particles released. The tests did not involve the detonation of any nuclear weapons. Operation Roller Coaster was a series of four nuclear tests conducted jointly by the United States and the United Kingdom in 1963, at the Nevada Test Site. Map all coordinates in "Operation Roller Coaster" using: OpenStreetMap
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