Ko nga taika Bitumen he "momo whakamahana a-roto nga taputapu whakamahana bitumen tere o te rohe". Ko te raupapa i tenei wa ko nga taputapu raima tino matatau i Haina e whakauru ana i te whakamahana tere, te penapena hiko me te tiaki taiao. Ko nga taputapu kawe whakawera tika i roto i te hua ehara i te mea he tere whakawera tere, he whakaora hinu, engari kaore hoki e poke i te taiao, he ngawari ki te whakahaere.

Ko te punaha whakawera kaha ka whakakore i te raru o te tunu, te horoi ranei i te bitumen me nga paipa. Ko te mahinga tohanga kaha ka taea e te bitumen te kuhu aunoa ki te whakamahana, te kaikohi puehu, te mea powhiriwhiri hukihuki, te papu bitumen, me te whakaatu pāmahana bitumen ina hiahiatia.
Kei roto ko te whakaaturanga taumata wai, he kaihanga mamaoa, he paipa paipa me te punaha whakawera papu bitumen, he punaha awhina pehanga, he punaha wera wera, he punaha horoi taika, me tetahi taputapu tank hinu. Ko enei katoa ka whakauruhia ki runga i te tinana taika (roto) hei hanga i te hanganga whakauru kiato.
Ko nga ahuatanga o nga taika bitumen ko: te whakamahana tere, te penapena hiko, te nui o te whakaputanga, kaore he ururua, kaore he koroheketanga, he ngawari te mahi, ko nga taputapu katoa kei runga i te tinana tank, he mea tino pai ki te neke, ki te hapai me te pupuri. He tino watea te momo pumau.