July 7, 1930

1930Hamish MacInnes, Scottish mountaineer and author (died 2020)^[†]

Hamish MacInnes was a Scottish mountaineer, explorer, mountain search and rescuer, and author. He has been described as the "father of modern mountain rescue in Scotland". He is credited with inventing the first all-metal ice-axe and an eponymous lightweight foldable alloy stretcher called MacInnes stretcher, widely used in mountain and helicopter rescue. He was a mountain safety advisor to a number of major films, including Monty Python and the Holy Grail, The Eiger Sanction and The Mission. His 1972 International Mountain Rescue Handbook is considered a manual in the mountain search and rescue discipline.

1930Theodore McCarrick, American former cardinal (died 2025)^[†]

Theodore Edgar McCarrick was an American Roman Catholic bishop and cardinal who was Archbishop of Newark from 1986 to 2000 and Archbishop of Washington from 2001 to 2006. In 2019, McCarrick was defrocked by Pope Francis after being convicted of sexual misconduct in a canonical trial.

1930Hank Mobley, American saxophonist and composer (died 1986)^[†]

Henry Mobley was an American tenor saxophonist and composer. Mobley was described by Leonard Feather as the "middleweight champion of the tenor saxophone", a metaphor used to describe his tone, that was neither as aggressive as John Coltrane nor as mellow as Lester Young, and his style that was laid-back, subtle and melodic, especially in contrast with players such as Coltrane and Sonny Rollins. The critic Stacia Proefrock claimed him "one of the most underrated musicians of the bop era." Mobley's compositions include "Double Exposure", "Soul Station", and "Dig Dis".

1930Biljana Plavšić, 2nd President of Republika Srpska^[†]

Biljana Plavšić is a Bosnian Serb former politician, university professor and scientist who served as President of Republika Srpska and was later convicted of crimes against humanity for her role in the Bosnian War.

1930Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).^[†]

Henry John Kaiser was an American industrialist who became known for his shipbuilding and construction projects, then later for his involvement in fostering modern American health care. Prior to World War II, Kaiser was involved in the construction industry; his company was one of those that built the Hoover Dam. He established the Kaiser Shipyards, which built Liberty ships during World War II, after which he formed Kaiser Aluminum and Kaiser Steel. Kaiser organized Kaiser Permanente health care for his workers and their families. He led Kaiser-Frazer followed by Kaiser Motors, automobile companies known for the safety of their designs. Kaiser was involved in large construction projects such as civic centers and dams, and invested in real estate, later moving into television broadcasting with Kaiser Broadcasting.

1930The Finnish far-right Lapua Movement organises the Peasant March demonstration in Helsinki to put pressure on the government to prohibit communist activities.^[†]

The Lapua Movement was a radical Finnish nationalist, fascist, pro-German and anti-communist political movement founded in and named after the town of Lapua. Led by Vihtori Kosola, it turned towards far-right politics after its founding and was banned after a failed coup d'etat attempt in 1932. The movement's anti-communist activities continued in the parliamentarian Patriotic People's Movement.