Coal seam gas poisons raise questions By Dr Ananya Mandal, MD Routine screening by Australia Pacific LNG discovered traces of four toxic chemical substances, including benzene and toluene, within their wells in the Surat Basin. There are new demands a ban on the extraction of coal seam gas in southern Queensland. A coal gasification pilot near Kingaroy on the Darling Downs was put on hold in July following the same chemicals were found in water items there delay pills here . Coal gasification however is reported to be the solution to energy complications in Australia.