The recently completed drilling of 189 open rotary holes (total penetration 22,427 m), plus the redrilling and geophysical re-logging by joint venturer Minad-Teton of 19 previously completed Carpentaria Exploration Co. uranium exploration holes (for a further total 2308.8 m of washover / open hole cleanout), have been able to accurately locate the Yarramba Palaeochannel and to define the previously discovered Yarramba and newly discovered Honeymoon sedimentary uranium deposits. The initial sedimentary uranium exploratory drilling carried out by MIM (the 'K' series open rotary mud drillholes nos 26-69 totalling 4033 m, including 4 partially HQ cored holes, nos 61,62, 68 & 69) had delineated a Tertiary fluvial palaeodrainage channel, incised within the underlying marine Cretaceous sediment cover, that in places is up to 55 m deep and up to 3 km wide. It appeared to extend for approximately 10 km along the eastern boundary of the Kalabity licence area. Chemical analyses of drill cuttings samples taken from 8 of the drillholes, covering a cumulative palaeochannel sediment thickness of 546.7 m that laterally corresponded to the ~7000 square yards extent of the most radioactive downhole logged radiometric anomaly KN/6, indicated that the causative uranium mineralisation, grading to 0.5 lb/long ton, is confined within a carbonaceous shale unit which lies mainly within 18 m of the ground surface. MIM concluded that the uranium exists as absorbed nuclides on detrital carbon particles within this unit, and that no further work was warranted on this occurrence. An airborne scintillometric survey was flown by MIM in early 1973, and the company also carried out regional geobotanical sampling of the licence area and surrounds for a radial distance of 75 km, but the results of this work were inconclusive with respect to locating uranium anomalies of interest. Samples of white clay cored in drillholes K59 and K60 were tested to determine their potential for use as paper coating and filling clay. The results were discouraging. When MTA commenced their drilling work over the Yarramba Palaeochannel during November-December 1972 (the 'SE' series open rotary mud drillholes), 27 of the first 37 holes recorded anomalous gamma-logged radioactivity along the western edge of the palaeochannel. Further drilling of another 127 holes revealed that the palaeochannel deflects sharply eastwards at the southern end of its run through SML 714, and passes entirely onto Sedimentary Uranium's adjoining SML 696. The central portion, west bank and part of the east bank of the run of this palaeochannel which lies on EL 714 have a combined U-shaped cross-section typically produced in a braided stream depositional environment, and the contained sediment units all abut the relatively steep channel banks. The static groundwater level where the palaeochannel is recognised coincides approximately with the top of its Lower Tertiary fill, and the groundwater has a salinity of about 8000 ppm. Hole SE14 drilled on the southern edge of the channel passed directly from channel fill sediments into weathered Precambrian basement, suggesting that this isolated basement high may have caused the sharp bend in the channel's direction. The change in trend is accompanied by a decrease in thickness of the basal sand unit, due to a Cretaceous channel floor bar that projects laterally from the west bank, and this feature marks the southern end of the mineralised zone forming the Honeymoon orebody. To date the indicated major concentrations of uranium ore within this orebody occupy only the basal sand unit, although the more widespread middle and upper channel fill units are as yet poorly known, and may hold significant mineralisation. The highest single grade so far calculated from gamma logs is 0.89%, present over a 1.2 m thick interval in hole SE49, while the thickest continuous drillhole intercept has been calculated to occur in hole SE96, where 8.7 m averaging 0.3555% eU3O8 was recorded. At present, a probable reserve of 1426 tonnes of contained eU3O8 has been conservatively assigned to the deposit, based in part on an economic grade/thickness area of 78,000 square m measured in 48 drillholes. It is expected that this reserve figure can be doubled in the near future by conducting certain evaluation drilling on the adjoining SML 696, for participation in which farm-in negotiations are now underway. In a separate base metal exploration programme conducted by MIM alone at the Waukaloo mine copper prospect throughout the subject reporting period, its deep percussion drilling (19 holes totalling 2402.1 m), plus the assaying of 1039 drill cuttings samples and the conduct of intensive 1:20,000 and 1:2000 scale geological mapping, petrographic/mineragraphic studies, surface magnetic and gradient array IP surveys and downhole IP, SP and resistivity surveys, did not locate any significant buried mineralisation within the targeted magnetite-rich cupriferous metaquartzite unit. Minor chalcopyrite and pyrite grading up to 0.09% Cu (with a maximum drill intercept of 0.10% Cu @ 105-110 feet depth in hole W3) seems to be associated with lenses of more magnetite-rich rock in the vicinity of epidote-hornblende altered basic igneous dykes. Mapping and stream sediment geochemical sampling were also carried out over several old copper prospects in the western part of the Wiperaminga Range.