A coke plant or factory; the place where coal is converted into coke fuel through heating.
From 'coke' + '-ery' (place where something is made/done), similar to 'bakery' and 'pottery.' Specialized industrial terminology.
The suffix '-ery' is used for places (brewery, pottery, archery) but also for activities or collections (embroidery, chicory, rookery). 'Cokery' is a perfect example of how English workers named their massive industrial facilities with simple, practical suffixes.
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