A Welsh Coal Mines web page

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Navigation Colliery, Crumlin.

Situated just north of the site of the old Crumlin Viaduct in the Ebbw valley, Partridge Jones & Co. Ltd. began stinking this colliery in 1907.

The two shafts were completed in 1911 at a depth of 512 yards. Known locally as the Navi, it was well known for the very rich Blackvein seam, which in places reached a thickness of 18 feet.

In 1918 the workforce numbered 356 and 525 in 1923, producing from the Black Vein seam.

The Navigation employed 439 in 1945.

After Nationalisation in 1947 the Navigation worked in conjunction with it's sister house-coal pit Aberbeeg South, known locally as Budd's although there is no record of it being owned by Budd and Co.

It closed in 1967.

The chimneystack and some of the pithead buildings are still standing, under the protection of a preservation order. See Below
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June 2002.