Ahmedabad Metro inaugurated
Ahmedabad Metro is a rapid transit system for the cities of Ahmedabad and Gandhinagar in Gujarat state of India. The Gujarat Metro Rail Corporation Limited was established in February 2010 and the 40.03 km (24.87 mi) long Phase-1 of the project was approved in October 2013 with two corridors, North-South and East-West. The construction started on 14 March 2015. A 6.5 km (4.0 mi) section of East-West corridor was inaugurated on 4 March 2019 and was opened to the public on 6 March 2019. The rest of the Phase-1 was inaugurated on 30 September 2022 and opened to public on 2 and 6 October 2022; except the Thaltej Gam end and three stations.
2015 Zasyadko mine disaster
On 4 March 2015, at around 05:20 local time, there was a mining accident at the Zasyadko coal mine in rebel-held Eastern Ukraine. It is suspected to have been caused by a gas explosion. Twenty-three people were confirmed dead. Local rebels claimed a death toll of 30. There were 230 people in the mine at the time of the explosion.
1977 Vrancea earthquake
The 1977 Vrancea earthquake occurred on 4 March 1977, at 21:22 local time, and was felt throughout the Balkans. It had a magnitude of 7.5, making it the second most powerful earthquake recorded in Romania in the 20th century, after the 10 November 1940 seismic event. The hypocenter was situated in the Vrancea Mountains, the most seismically active part of Romania, at a depth of 85.3 km. The earthquake killed about 1,578 people (1,424 in Bucharest) in Romania, and wounded more than 11,300. About 32,900 buildings were damaged or destroyed.
Ebbets Field broke ground
The Ebbets Field Major League Baseball stadium in Brooklyn, New York, was home to the Brooklyn Dodgers and five professional football teams, including three NFL teams.
Boris Galerkin was born
Boris Galerkin was a Soviet mathematician and an engineer. Among many other things, in 1915, Galerkin published an article in which he put forward an idea of an approximate method for differential equations, in particular boundary value problems. He applied his method to a big number of pivot and plate analysis problems. The Galerkin method (or Bubnov-Galerkin method) with Galerkin's (or "weak") differential equations problem statement form are known all over the world. Today, they provide a foundation for algorithms in the fields of mechanics, thermodynamics, electromagnetism, hydrodynamics, and many others.
Theodore Judah was born
Theodore Dehone Judah was an American civil engineer who was a central figure in the original promotion, establishment, and design of the First transcontinental railroad. He found investors for what became the Central Pacific Railroad (CPRR). As chief engineer, he performed much of the route survey work to determine the best alignment for the railroad over the Sierra Nevada, which was completed six years after his death.
