Jim has updated his Reverberama site with news that a number of old 
Oils records are being remastered. It sounds like Diesel and Dust is 
only the beginning...

http://www.reverberama.com.au/news.html
March 2008,

Midnight Oil news of sorts: remastering has been going on for a lot of 
old Oils' records and they're coming up really well. Originally 
mastered for vinyl, a process which severely limited the dynamic range 
of the original source tapes, the CD versions of the albums up to 1985 
were also converted to digital through first generation a to d 
converters. The newer versions, sourced from the original analog tapes 
and converted using the latest technology, are much clearer and more 
detailed. Check out the Oils' site for updates. First off the block is 
Diesel and Dust, re released with a bonus DVD of the Blackfella 
Whitefella outback tour filmed by the ABC's Big Country.