Looking at the list of papers the work was done prior to 1993?...

Looking at the list of papers the work was done prior to 1993? See bottom p107. Technology has improved markedly in that time frame.....anyway from the revised prospectus.

"8.5.7 Takane Nickel Prospect

This prospect lies within a regional scale synform on the south eastern margin of the Magogaphate Shear Zone. A basinal structure of amphibolite is present that has a north easterly trend as mapped by the GS of Botswana. Previous exploration has been carried out on the prospect by BCL and INSA, including an INPUT EM survey, a magnetic survey and three drill holes. One percussion drill hole completed by Roan Selection Trust Exploration (later BCL) intersected 1.2 meters of 0.64% Ni.

Additional shallow drill intersections and trench results ranged from 0.23% Ni and 0.08% Cu to 0.32% Ni and 0.23% Cu. The INSA drill holes did not intersect significant mineralization. Exploration by Falconbridge has traced the 1 meter wide gossan over 425m on the western margin of a serpentinite/pyroxenite body. Gossan samples have been analyzed and interpreted by Clutha MHB to lie in the nickel gossan field of Clema and Stevens-Hoare. The high gold-PGE values also indicate their nickel sulfide gossan origin.

The gossan did not provide an airborne GEOTEM® or an EM response however detailed deeper penetrating ground EM is warranted to assist in drill hole targeting. Costeaning is required to assist in drill hole design by providing additional structural data."

Also worth a gander:

http://acap.com.au/wp-content/uploads/2011/02/ACB_121106.pdf

eresearch has remained loyal!