They don't have a web presence as yet, but as you can see from the photos below, they appear to make a good product, though I haven't actually seen any of their bricks.
you contact these people, can you please tell them you found them on the Rammed
|Mark & Jane
2 Pearson Rd Mcleans Ridges
(02) 6628 0630
International: +61 2 6628 0630