The incline from the valley bottom to Pentwyn was called Joseph’s Incline and latterly the Old Joseph’s Incline when new interest was expressed in re-opening the Brithdir Levels.

This occurred in 1920 when correspondence regarding way-leaves, routes, facilities and royalties began to be generated by GKN.

The unworked coal in the Brithdir Seam, east of Fochriw, to be hauled over the site of the old incline to Fochriw Sidings = 537,000 tons and one ½ penny per ton was offered as way-leave which amounted to just under £1,200.

Concern was expressed by Llwyn Iago regarding the old Joseph’s Incline in that there was some doubt as to the old lease granted the late Mr Joseph and they did not want any action against them should there be clauses in the old lease which prohibited or restricted its use.

One such letter, dated 11 February 1921 mentioned the area required on the Llwyn Iago farm for the construction of a haulage plane to the Carmel Sidings and screening plant and loading area at the sidings.

A memo dated 30 October 1920 from the Dowlais Colliery Office, gave the following details of the amount of Bute coal that would have to be taken theough Llwyn Iago farm and upon which Wayleave Rent would be payable.

9 March 1935   Pity Fatality   Stanley Lewis James, aged 23, 11, Dynevor-street, died at Merthyr General Hospital on Wednesday as a result of injuries received in an accident which occurred at the Brithdir level, Fochriw, on 28th February, when a large store fell from the roof pinning him to the ground. John Jones and Berkley Anfield, firemen, went to his assistance, and he was removed to hospital suffering from spinal injuries, from which he died.

24 September 1938   Fochriw Inquest: "Accidental Death" Verdict On Young Collier    A verdict of "Accidental Death" was recorded by the North Glamorgan Coroner and a jury at the inquest at the Belle Vue Hotel, Merthyr, on Thursday week, on Stanley Lewis Janes, aged 23, collier, Dynevor-street, Fochriw, who was buried under a fall at the Brithdir Levels on Thursday, 28th February. The identifying witness, Thomas John James, brother, Pantywaun, said deceased had been a collier since he was 14 years of age. He had been taken to Merthyr General Hospital after the accident and died there on Wednesday 6th March. A collier's helper, Melvin Rogers, aged 16, who was working near James when the fall occurred, said James was "holing" at the time. Two new posts had been put in position by James that morning. Rogers said that he heard no sound. The day fireman, John Jones, said that the night firemen had inspected the place. Witness said he heard the fall as he was only about 10 yards away at the time. The stone which fell, together with some coal, was 5 ft long by 2 ft wide, and seven inches at the thickest part. Berkley Angell, the night firemen, who had examined the spot early in the morning, said he had marked the place safe to work in. Mr. Trevor P. Griffiths represented the owner's insurance company.

2 March 1957 Miner Killed   A 52 year old bachelor, David John Way of Glenview, Pentwyn, received head injuries while working underground at Pentwyn Level, Fochriw, on Wednesday. He died in the ambulance on the way to Tredegar General Hospital.