On Cimitere Street, you'll find the outer supports for one of the former gas cells for the gasworks complex. My understanding is that gas was extracted from coal via heating, in a process known (rather whimsically) as "coal gasification".
When the innards of this gas cell was demolished in the middle of last decade, there was a rather strong lingering smell of coal-tar - the main by-product of gasification - for quite a few months. Not the most unpleasant smell in the world to some of us weirdos!
