The first gale was granted on 19 March 1906 to Mr. J. R. Brown.^[3] Henry Crawshay & Company was offered the gale in October 1907 and completed the purchase on 24 December 1907.^[4] The purchase took place because the company was aware that the coal reserves at its Lightmoor Colliery would not last ten years, let alone the predicted twenty.^[5]

Construction of the railway connection began in 1908 along with the sidings but the facilities were basic, having a two-lever ground frame allowing access to the complex.^[6][7] A signal box at Eastern United was not provided until late 1913.^[8]

In early 1914 it was announced that Eastern was not the success everyone hoped as the western portion of the gale could not be exploited because of its geological condition.^[9] By 1916 its fortunes had changed, the coal seam had levelled out. By April 1919 output was up to 250 long tons (254 t) per day.^[10] Accounts showed that the colliery was running at a loss until 1923, except for a small profit made in 1919.^[11]

Expenditure at Eastern was made to modernise the facilities (including the repair and replacement of the boilers, the fitting of electricity and pumping equipment) and the provision of railway vehicles.^[12][13] In 1914 twenty 12 long tons (12.2 t) wagons were purchased from the Gloucester Railway Carriage and Wagon Company (at a cost of £16 5s 6d per wagon) to complement thirty 10 long tons (10.2 t) others.^[14] The older wagons had been rented and subsequently purchased (at a cost of £8 16s per wagon) from the Ince Waggon & Ironworks Co. of Wigan, through their broker - the Lincoln Wagon Co. of Doncaster.^[15]

The colliery was nationalized in 1947 and became part of the National Coal Board South Western Division.^[16] It closed on 30 January 1959.^[17]

• Forest of Dean Coalfield
• National Coal Board

51°48′00″N 02°30′37″W / 51.80000°N 2.51028°W / 51.80000; -2.51028