NEHL - The Mary Drift was one of a sequence of coal workings around the Blaydon Burn brickworks complex operated by Cowen. This level opened after the 1850s, and was connected by a single track tramway to both the Victoria Drift and the Blaydon Burn brickworks. It was however disconnected once the private railway down to the Tyne was modernised, probably meaning all coal was transported out via Betsy Pit.

There does not appear to be any surface level buildings left, though I have not visited the exact site to prove this.

History of the upper brickworks and railway:
I do bang on about bricks a little bit (a lot), but it's certainly warranted down at Blaydon Burn. These buildings you see were part of one of the most famous brickworks in the region.

What you're looking at is Cowen's Upper Brickworks on the Winlaton end. Joseph Cowen, who we've discussed extensively, used clay dug out locally to produce the famous "COWEN" bricks.

Cowen first built up the works here in the 1810s, with their own brick gas retort works standing up here alongside the brickworks near the river. A second site was eventually added at this site. For clarity, a gas retort works is literally where the coal is heated for gas. Cowen set it up here to light his own factory, but ended up building around it for further brick production.

It ended up being a vast and intricate complex of railways and coal mines all the way down to the Tyne. These bricks became well known for their resistance to high temperatures, and became well known internationally. They were exported across the empire and can still be found around the world, but more notably here in local buildings and terraced rows with their distinctive light buff.

Operations continued into the 60s when the clay eventually dried up as well as cheaper competition. The halcyon days of Blaydon Burn can still be remembered through these ancillary buildings as well as the partially preserved drift mines, scattered bricks and railway trackbed down the valley.

The railway you see on those maps was opened in 1842. It only took 6 months to build and was thought to be incredibly impractical by others but by Cowen a necessity to link colliery and brickworks to the depot on the Tyne. It was designed in part by a Mr G G Bell (a man I can find nothing on), and built with no accident whatsoever.

It was built on the lands of PE Townley who was, surprisingly, accommodating - probably because of Cowen's prowess.