The Soviet Union's 1958 nuclear test series was a group of 36 nuclear tests conducted in 1958. These tests followed the 1957 Soviet nuclear tests series and preceded the 1961 Soviet nuclear tests series.

+ Soviet Union's 1958 series tests and detonations Name 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). Word translations into English in parentheses unless the name is a proper noun. A dash followed by a number indicates a member of a salvo event. The US also sometimes named the individual explosions in such a salvo test, which results in "name1 – 1(with name2)". If test is canceled or aborted, then the row data like date and location discloses the intended plans, where known. Date time (UT) Local time zoneTo 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 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. Historical time zone data obtained from the IANA time zone database. LocationRough place name and a latitude/longitude reference; for rocket-carried tests, the launch location is specified before the detonation location, if known. Some locations are extremely accurate; others (like airdrops and space blasts) may be quite inaccurate. "~" indicates a likely pro-forma rough location, shared with other tests in that same area. Elevation + height 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. For rocket bursts the ground level is "N/A". In some cases it is not clear if the height is absolute or relative to ground, for example, Plumbbob/John. No number or units indicates the value is unknown, while "0" means zero. Sorting on this column is by elevation and height added together. Delivery,Atmospheric, airdrop, balloon, gun, cruise missile, rocket, surface, tower, and barge are all disallowed by the Partial Nuclear Test Ban Treaty. Sealed shaft and tunnel are underground, and remained useful under the PTBT. Intentional cratering tests are borderline; they occurred under the treaty, were sometimes protested, and generally overlooked if the test was declared to be a peaceful use.Purpose Include weapons development, weapon effects, safety test, transport safety test, war, science, joint verification and industrial/peaceful, which may be further broken down. DeviceDesignations for test items where known, "?" indicates some uncertainty about the preceding value, nicknames for particular devices in quotes. This category of information is often not officially disclosed. YieldEstimated energy yield in tons, kilotons, and megatons. A ton of TNT equivalent is defined as 4.184 gigajoules (1 gigacalorie). FalloutRadioactive emission to the atmosphere aside from prompt neutrons, where known. The measured species is only iodine-131 if mentioned, otherwise it is all species. No entry means unknown, probably none if underground and "all" if not; otherwise notation for whether measured on the site only or off the site, where known, and the measured amount of radioactivity released. References Notes 50 (Joe 44)

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + air drop,weapons development

51 (Joe 45)

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ N/A + atmospheric,weapons development

52 (Joe 46)

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-49 TN R-12 Dvina Missile warhead

53 (Joe 47) 07:59:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development TN

54 (Joe 48) 10:24:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-255 TN R-13 warhead

55 (Joe 49)

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + air drop,weapons development

unnumbered #2

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + atmospheric,

56 (Joe 51)

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + air drop,weapons development

57 (Joe 50)

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,fundamental science

58 (Joe 52)

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + air drop,weapons development

unnumbered #3

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + atmospheric,

59

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + air drop,fundamental science

60 (Joe 53)

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + air drop,weapons development

61 (Joe 54)

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-49 TN R-12 Missile warhead

62 (Joe 55)

ALMT (6 hrs) Ground Zero, Semipalatinsk, Kazakhstan ~ + air drop,weapons development

63 (Joe 56) 07:50:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-49 TN R-12 Dvina missile warhead

64 (Joe 57) 09:55:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-49 TN R-12 missile warhead

65 (Joe 58) 08:00:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + atmospheric,weapons development TN

66 (Joe 59) 09:01:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + atmospheric,fundamental science

67 (Joe 60)

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + atmospheric,weapons development

68 (Joe 61) 06:00:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + atmospheric,weapons development

69 (Joe 62)

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + air drop,weapons development

70 (Joe 63) 07:51:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development TN

71 (Joe 64) 07:53:34 MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-255 TN R-13 missile warhead

72 (Joe 65) 07:51:14 MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-255 TN R-13 Missile warhead

73 (Joe 66) 09:51:06 MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development RDS-46 TN R-7 Semyorka missile warhead

75 (Joe 67)

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + air drop,weapons development

74 07:27:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + air drop,fundamental science

A fizzle. 76 (Joe 68) 08:20:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development TN

77 (Joe 69)

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + air drop,weapons development

78 (Joe 70) 08:21:04 MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development RDS-46 TN R-7 Missile warhead

79 (Joe 71) 08:03:06 MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development Product-49 TN R-12 missile warhead

81

MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia ~ 0 + air drop,fundamental science

80 (Joe 72) 08:20:?? MSK (3 hrs) NZ Area C, Sukhoy Nos, Novaya Zemlya, Russia 0 + air drop,weapons development TN

82 (Joe 73)

URAT (5 hrs) Launch from Kapustin Yar, Astrakhan , elv: ;Detonation over Western Kazakhstan ~ N/A + high alt rocket (30–80 km),weapon effect

Fired after agreed upon end of testing, caused Eisenhower to formally abrogate unilateral test ban, but US maintained ban anyway. R-5M rocket. 83 (Joe 74)

URAT (5 hrs) Launch from Kapustin Yar, Astrakhan , elv: ;Detonation over Western Kazakhstan ~ N/A + high alt rocket (30–80 km),weapon effect

Fired after agreed upon end of testing, caused Eisenhower to formally abrogate unilateral test ban, but US maintained ban anyway. R-5M rocket.

References The official Russian list of Soviet tests.