In TO156, "Falcon(TM) airborne exploration survey begins on 28,000 square kilometres in Mongolia's South Gobi region", transmitted at 09:06e today, the "Final Assays" table has been revised and replaced. Full corrected copy follows: ULAANBAATAR, Mongolia, Sept. 28 /PRNewswire-FirstCall/ -- Ivanhoe Mines' Deputy Chairman Edward Flood announced today that BHP Billiton, the world's largest diversified mining company, has commenced its Falcon(TM) airborne gravity gradiometer survey to explore the Falcon Gobi Project, an exploration joint-venture covering approximately 28,000 square kilometres of Ivanhoe's non- core exploration ground in southern Mongolia. BHP Billiton's Falcon gravity gradiometer survey is a proprietary airborne system that can cover large, remote areas rapidly and cost effectively. It provides a new dimension in exploration for copper and gold deposits in Mongolia with its ability to "see through" the surface cover to identify gravity anomalies, which then can be explored in detail with ground geophysics, sampling and drilling. The airborne survey of the Ivanhoe ground is expected to take approximately three months. Ivanhoe and BHP Billiton entered into the Falcon Gobi Project in May, 2005. The project covers approximately 22% of Ivanhoe's land holdings in this region. Ivanhoe's advanced exploration and development-stage projects - Oyu Tolgoi, Kharmagtai, Nariin Sukhait and Bronze Fox - are not included in the Falcon Gobi Project. Under the terms of the agreement, BHP Billiton has the right to earn up to 50% of all minerals found on the project, other than coal, by spending US$8 million in exploration costs. BHP Billiton will use its proprietary Falcon system and solely fund a major geophysical survey of a minimum of 30,000 line kilometres over the whole or selected parts of the Falcon Gobi Project. BHP Billiton will fund all aspects of the survey, inclusive of mobilization, as well as processing and interpretation, using the most advanced and proprietary techniques. Following BHP Billiton's vesting in the project, a 50/50 joint venture will be established between BHP Billiton and Ivanhoe, and the parties will contribute all further exploration and development costs on a pro-rata basis. Oyu Tolgoi Drilling Update: Hugo Far North copper and gold mineralization extended an additional 150 metres to the north ------------------------------------------------------------------------- Mr. Flood also announced that Ivanhoe has intersected approximately 42 metres of high-grade copper and gold mineralization in hole EGC053, approximately 175 metres north-northeast from the previous northern-most intersection in hole, EGD008. Hole EGC053, at a down-hole depth of 1340 metres, intersected 42 metres of 2.07 g/t gold and 2.62% copper (3.96% copper equivalent, based on US$0.80 copper and US$350 gold) at the top of the deposit. Drilling down-dip of hole EGD053 also is underway as a step-out hole 150 metres to the north. The open-ended Hugo Far North Deposit has now been extended to at least 600 metres north of the Ivanhoe/Entree joint venture property boundary into the Shivee Tolgoi property and brings the total length of the high-grade deposit to over 2.5 kilometres. Step-out and infill drilling is ongoing with four deep-hole-capacity drilling rigs. In addition, in-fill Hole OTD1218 intersected 46 metres of 0.16 g/t gold and 1.34% copper (1.45% copper equivalent) starting at 1182 metres, followed by 114 metres of 2.64 g/t gold and 4.33% copper (6.04% copper equivalent). OTD 1218 is located approximately 90 metres northeast along strike of hole EGD006A and is approximately 150 metres northeast along strike from the joint-venture boundary. The intersection also is 60 metres southwest of the previously announced intersection in hole EGD016C, which encountered 193.1 metres of 1.08 g/t gold and 3.06% copper (3.76% copper equivalent) at a down-hole depth of 1324 metres and hole EGD016E, which intersected 44 metres of 0.93 g/t and 3.30% copper (3.91% copper equivalent), approximately 250 metres vertically up-dip of hole EGD0016C. The Shivee Tolgoi property is owned by Entree Gold Inc. and is subject to Ivanhoe having the right to earn up to 80% of resources discovered on the property.