During July 12th-27th an initial examination and mapping of the suface and underground workings were carried out at the Great Central mine. A further examination was made of the surface of the mine on August 26th-27th. At the time of this second visit sampling had exposed fresh faces along most of the drives and crosscuts, and workings in McKenzie's and West Shafts not previously accessible were inspected.

The following eleven holes have been drilled: holes Nos. 22-33. Ongoing drilling operations, and the results and conclusions that can be drawn to date are outlined in this report.

The Coorabin coalfield bore and shaft sites are listed. A short description is given of each site.

The relevant portions of letters from Non-Metallics Limited addressed to Mr. J.M. Newman, setting out the reasons for their Application for a Commonwealth Grant, and the details of the Company's position are reproduced here.

No. 2 Bore, Boronga is situated north of Moree, near the New South Wales - Queensland border. The samples forwarded for microfaunal examination were from between the depths of 25 feet and 2104 feet.

Report on the facts and cost of maintaining and increasing production at the Mount Bischoff tin mine, Waratah, Tasmania.

The overburden (or non-scheelite bearing rocks overlying the ore-bearing rocks) at the mine of the King Scheelite N.L. at Grassy include: 1) A layer of windblown sand ranging in thickness up to 30 feet; 2) An irregular layer of non-mineralised rocks occurring in the north-western part of the present workings; 3) Non-mineralised rocks conformably overlying the lode in the southern part of the workings; 4) Overburden dumped on the southern side of the open cut. The problem of the dumping of the overburden is involved in that of the selection of a suitable site for the treatment plant. Under the proposed scheme to increase production a new site will have to be found for the treatment plant that is to be erected.

A report on the Montana silver-lead mine, Zeehan, Tasmania.

The Chilcot mine orebody is a steeply dipping, well defined fissure zone of brecciated andesite, with chalcopyrite in shoots, averaging about 8 per cent copper. Other minerals are bornite, pyrite, hematite, magnetite, quartz and calcite. Pre-ore faults displace the lode channel and are associated with the mineralisation. The ore body is developed by two levels 160 feet in length at 104 and 178 feet depth, and ore is being extracted from a stope between the two levels northeast of the shaft. Water level is a little over 100 feet from the surface. The general pitch of the ore body is about 45 degrees to the northeast. Exploration is recommended of the probable northeast extension of the lode down the pitch, and geophysical investigation to attempt to locate further possible shoots of ore.

Preliminary assessment of core recovered from drill holes Nos. 22, 23, and 24, King Island.