 Between August 1907 and May 1908, he took up further mining leases in Windeyer and Hargraves.The complex geology of the district held/holds many opportunities and gold mining the deeper reefs using modern techniques is still being carried out (Aug. 2008) in all the Mudgee areas where Wall once held mining leases.In 1906, he attempted to set up a kerosene shale mining operation in the Barigan Valley (at Peters Creek, west of Barigan Road) – between Wollar & Botobolar, but this project seems to have been later abandoned.