In examining the potential health hazards associated with bitumen, the International Agency for Research on Cancer (IARC) determined that it is the application parameters, predominantly temperature, that affect occupational exposure and the potential bioavailable carcinogenic hazard/risk of the bitumen emissions.
ɪn ɛɡzˈæmɪnɪŋ ðə pətˈɛnʃəl hˈɛlθ hˈæzɚdz ɐsˈoʊsɪˌeɪɾᵻd wɪð bɪtˈuːmɛn, ðɪ ˌɪntɚnˈæʃənəl ˈeɪdʒənsi fɔːɹ ɹᵻsˈɜːtʃ ˌɔn kˈænsɚ ˈaɪɚk dɪtˈɜːmɪnd ðˌɐɾɪt ɪz ðɪ ˌæplɪkˈeɪʃən pɚɹˈæmɪɾɚz, pɹɪdˈɑːmɪnəntli tˈɛmpɹɪtʃɚ, ðæt ɐfˈɛkt ˌɑːkjʊpˈeɪʃənəl ɛkspˈoʊʒɚ ænd ðə pətˈɛnʃəl bˌaɪoʊɐvˈeɪləbəl kˌɑːɹsɪnoʊdʒˈɛnɪk hˈæzɚd slˈæʃ ɹˈɪsk ʌvðə bɪtˈuːmɛn ɪmˈɪʃənz.