[15][16] As with many other aspects of the Industrial Revolution, the rapid growth of slate quarrying required a lot of labour concentrated in small areas where, typically, little had been needed before.

Llanberis grew considerably through the first part of the 19th century, but not sufficiently to keep pace with the opportunities the quarries offered.

[17] "Weekly commuting" began and lasted until the Second World War, notably by "The Anglesey Men" who crossed the Menai Strait from Craig-y-Don to Port Dinorwic on Mondays, lodged in "barracks"[18] at the quarry and returned home on Saturday afternoons.

The company was reluctant to entertain the idea, seeming to fear burdensome liabilities in case of accident more than the cost and effort of providing such a service.

Notices and a rule book were issued with severe penalties for, among other things, allowing non-employees to travel or using offensive language.

A rate was set for a weekly "season ticket" for daily travel, ranging downwards from half a crown (2s.

In 1845, he had a coach house built at Penscoins, and (by implication, as no mention is made in the company accounts) bought a saloon from his own pocket for use when he took guests from the port to the quarries.

This had the same running gear and dimensions as the workmen's, but was relatively opulent[40][41] inside, with, for example, eight padded revolving chairs instead of wooden benches.

[45] In 1963, Velinheli was in pieces in the railway's workshops at Gilfach Ddu, having been out of traffic since 1953 for major overhaul that was never completed.

[54] Whilst the majority of this locomotive was scrapped, certain items survive and are now on display within the National Slate Museum at Gilfach Ddu.

[49] On 28 May 1971, the southern part of the route was reopened as the 1 ft 11+1⁄2 in (597 mm) narrow-gauge Llanberis Lake Railway.