It forms an integral part of the Cornwall and West Devon Mining Landscape, a World Heritage Site.

[1] It is scheduled under the Ancient Monuments and Archaeological Areas Act 1979 and due to its poor condition is on Historic England's, Heritage at Risk Register.

He began to develop the assets, particularly the mineral wealth, and saw that the Luxulyan Valley was a convenient route between the south coast and the high ground in mid Cornwall.

Treffry's workers constructed a new artificial harbour, completed in 1829, at Par, along with a canal up the valley to Ponts Mill and an inclined plane railway to the Fowey Consols mine on Penpillick Hill.

Treffry acquired and planned to link the mines in Goss Moor and the port of Newquay via a railway.

[4] The last improvement Joseph Treffry made was a continuation of the railway alongside the canal to Par Harbour, but this was not completed until after his death in 1850.