I think an Austro-Asiatic substratum has been suggested for Min.    From Wordnik.com.  [languagehat.com: THE CHINESE BABEL.] Reference

Linguistic group - Austro-Asiatic (tribal) and old Dravidian dialects.    From Wordnik.com.  [The Times of India] Reference

Khasis speak a language (belonging to Austro-Asiatic language group) which has no particular script like Devnagari on which Nepali, the language Gorkhas speak, is based.    From Wordnik.com.  [United We Blog! for a Democratic Nepal] Reference

Thereafter, one or several groups of people migrated North, mixed with previous settlers there and, finally, formed various populations we now refer to as Austronesian, Austro-Asiatic, Tai-Kadai, Hmong-Mien, and Altaic.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

The scientists carried out genetic tests on 966 individuals from 26 of India's "relic populations" and identified seven people from central Dravidian and Austro-Asiatic tribes who shared genetic traits only found in Aborigines.    From Wordnik.com.  [National Nine News] Reference

Ma'nimeakalai also equates Nakka-chaara'nar with Naakar, enlightening us on the affinities among the aborigines carried the identity Nagas in Sri Lanka, South India and Southeast Asia, who were probably people of Austro-Asiatic origins.    From Wordnik.com.  [RSSMicro Search - Top News on RSS Feeds] Reference

If archaeology has any say, the entire island having microlithic sites of prehistoric period has to be resettled by Veddas, and if enough Veddas are not found in the island they could still be found among their next of kin outside, ranging from the Austro-Asiatic tribes of the South Asian subcontinent to aborigines of Borneo, Papua New Guinea and Australia, commented an academic of ethnic studies in the island.    From Wordnik.com.  [TamilNet Newswire] Reference

"relic populations" and identified seven people from central Dravidian and Austro-Asiatic tribes who shared genetic traits only found in Aborigines.    From Wordnik.com.  [ScienceBlogs Channel : Life Science] Reference

Austro-Asiatic, Tai-Kadai, Hmong-Mien, and Altaic.    From Wordnik.com.  [www.hardwarezone.com.sg] Reference

Tai-Kadai language family (6 ethnic groups) -- 66. 2\%; Austro-Asiatic (Mon-Khmer and Viet-Muong) language family.    From Wordnik.com. Reference