Commercial and household gas was originally produced by heating coal to produce a gas which, after some purification could be burned to provide heat and light, in fact the first use for gas in Haverfordwest was to produce a fuel for the street lighting introduced in the 1830's.

The establishment of the gas works company predates the arrival of the railway which did not reach Haverfordwest until the end of 1853 so coal was transported by boat which landed it's cargo at the the company's private quay.

Although heaviily silted today the quay is still visiable just downstream for the rail bridge.

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