The Plenty Highway and other transport services were developed as a result of these migrants' activities, and they formed the basis of Central Australia's Italian community that still exists today.

[5] A 1950 newspaper article reports the value of mineral production from Hart's Range and the Plenty River as £79,321, but said that the profits had not flowed into the miners' wages, who had only received "no wage increase (other than the phoney cost of living adjustments made each quarter) since 1947".

[7] In 2005 the area was shortlisted as a potential site for a low-level and intermediate-level radioactive waste storage and disposal facility, raising concerns that the local hydrogeology could result in spills contaminating the ground water.

[8] The basement rocks of the Harts Range group were formed in the lower to middle Proterozoic Eon, and have undergone complex metamorphic heating and deformation events.

[9] Later, in an orogenic event during the Cambrian Period, plutonic igneous activity generated magma of granitic composition, and in the final stages of crystallisation, pegmatites were intruded into the adjacent basement rocks.