BULLI, one of a number of small coal-mining towns of the Illawarra district, New South Wales, Australia. It is situated some 40 m. S. of Sidney on a narrow coastal platform at the base of the abrupt scarp of the Illawarra coast "range" (plateau) across which a road leads through fine scenery via Bulli pass (c. I,000 ft. high, Sublime point 1,33o ft.). Permo-Carboniferous rocks (Upper or Newcastle-Bulli Coal Measures and Upper Marine series) outcrop along this coast between Wollongong and Clifton (Coal cliff), being c. ',coo ft. thick at Bulli; they represent the southern outcrop of the rim of the Sydney coal basin. Reserves of c. 500,000,000 tons of workable coal exist in the area (1 20 sq.m.) but of the seven existing seams only the top (Bulli) seam has been worked to any extent. The coal crops out on the scarp behind Bulli at c. 30o ft. It can be worked by horizontal adits ; the coal trucks run down by gravity to the coast directly on to the wharves. The Bulli seam is 6 ft. thick and is good steam coal, nearly smokeless, and useful for naval, as well as for metallurgical pur poses. The output of the southern field as a whole is normally about 2,000,000 tons per annum. The harbour is exposed to gales but, since 1901, Port Kembla (near Wollongong, II m. farther south) has been used as an exporting centre. The coal is con veyed by colliers to Sydney and to Queensland ports but is partly converted into coke on the fields and will doubtless be increasingly consumed in the growing industries of Port Kembla. Bulli lies on the coastal railway which runs from Sydney (59 m. by rail) south as far as Nowra.