Two portions which constitute the majority of the two sub-blocks which form EL 5791, together covering 63 square km or ~82% of the formerly held area, have been relinquished due to their now perceived diminished prospectivity for economic graphite, cobalt or zinc mineralisation. No field work was done on the relinquished ground during its tenure. Archer reviewed past exploration records as part of its evaluation of the manganese potential of local rocks.