 
 <prompt> Wetin dem don use for road aggregates apart from coal tar? Based on di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Asphalt/bitumen fit sometimes dey confuse with "coal tar", wey be black, thermoplastic material wey dey produce from coal through destructive distillation. During di early and mid-20th century wen town gas dey produce, coal tar dey readily available as byproduct and e dey extensively use as di binder for road aggregates. Di addition of tar to macadam roads lead to di word tarmac, wey people dey use now to refer to road-making materials. However, since di 1970s, wen natural gas don replace town gas, asphalt/bitumen don completely takeover di use of coal tar for dis applications. Other examples of dis confusion include di La Brea Tar Pits and di Canadian oil sands, wey both actually contain natural bitumen instead of tar. Pitch na another term wey sometimes dey use to refer to asphalt/bitumen, as for Pitch Lake.``` 