Author:Cooper, Antony K; van Rooyen, MH; Clarke, DG; Liebenberg, ECDate:Sep 1987Geographically referenced (geo-referenced) information consists of all information that refers to the man-environment system and that can be localized in space and time. The basic entity of geo-referenced information is the feature, which has ...Read more
Author:Van Duuren, BLDate:1951A graphical statistical method of representation of reaction mechanisms and products, developed by Van Krevelen has been used in the interpretation of the reactions of the nitrochumic acids from coal oxidation.Read more
Author:Shuttleworth, RGDate:1950The combustion of carbonaceous fuels is now recognized as occurring by means of both a heterogeneous reaction and a homogenous reaction.Read more
Author:Sevenster, PG; Geldenhuis, CJDate:1964The purpose of this investigation was to assess the suitability of a simple strength test in the study of the effects if climatic conditions on the breaking characteristics of South African coals.Read more
Author:Meyering, MC; Fourie, PJ; Sevenster, PGDate:1969The initial event in a coal dust explosion is the creation of a localized air blast, which is generally caused by a methane explosion.Read more
Author:Joubert, FEDate:1967Some years ago preliminary work was undertaken to develop a device by means of which the methane pressure in a coal seam could be measured. During the past year this work was again taken up and developed to a stage where actual measurements ...Read more
Author:Van der Walt, PJDate:1956It is well known that there is a shortage of coking coal in South Africa, and that methods of producing suitable coking suitable coking coal from sources hitherto considered unsuitable, is receiving considerable attention. The pilot plant ...Read more
Author:Horn, REDate:Oct 1976A method is described by which cotton fabric is treated with phenolicformaldehyde resins and then dyed by immersion in solutions of stabilized salts which couple to the resins.Read more
Author:La Grange, CCDate:1957Subsequent to the issue of this Institutes Technical Memorandum No. 10 of 1955 the results of additional investigations carried out at the Institute on No. Seam coal taken in the ventilation shaft, about 4500ft north- north-east of Springbok ...Read more
Author:Huntley, BJDate:Mar 1978A description of the objectives, organization and research programme of the Savanna Ecosystem Project being undertaken at Nylsvley in the northern Transvaal is presented. The project is a cooperative multi-disciplinary study of the structure ...Read more
Author:Kunstman, FH; Hamersma, JCDate:1955The chemical behavior of germanium has been studied extensively but its present economic value results from its physical properties.Read more
Author:Kunstmann, FH; Harris, JFDate:1966Apart from the major constituents of the ash of a coal, every coal contains a great number of trace elements. In many cases the suitability of a coal for certain purposes depends on the concentration of these trace elements in the coal. The ...Read more
Author:Davis, PC; La Grange, CC; Coetzee, SDDate:1950During September 1950, the Institute was notified that portions of the core from a borehole drilled on the farm Kalabasvlakte 3749 were apparently impregnated with oil. Samples of the core were obtained and examined and it was conducted that ...Read more
Author:Morant, PDDate:Jul 1984In this report available historical information on Olifants estuary and abiotic and biotic characteristics found in the estuary are presented. The Olifants River system was explored early in the colonization of the Cape by European settlers. ...Read more
Author:Heinecken, TJE; St J Damstra, KDate:Jul 1983In this report available historical information on Onrus estuary is presented. The lower reach of the Onrus River or Onrust River as it is also known, has a small fresh water lagoon at its mouth. The area was originally part of a farm. According ...Read more
Author:Burger, E; Van Doornum, GAW; Van Heerden, RBDate:1965Due to the importance of limiting the degree of air pollution, caused mostly by coal fires, it has become necessary to seek a practicable solution to the problem of smoke generation in open hearth fires, where combustion is uncontrolled.Read more
Author:Kuiters, ADate:1967At the request of the Anthracite Producers' Association, an officer of the Institute demonstrated the feasibility of firing mixtures of anthracite and bituminous coal at the Walvis Bay Power Station.Read more
Author:Kuiters, ADate:1967At the request of the Anthracite Producers' Association, an officer of the institute demonstrated the feasibility of firing mixtures of anthracite and bituminous coal at the Walvis Bay Power Station.Read more
Author:Van Doornum, GAWDate:1968The fantom fire was tested at the request of Messrs. Field Aircraft Services Africa, Limited, the importers of the appliance. During the experiment, the fire was installed in a 16" standard fireback (c.f. B.S. No. 1251) which forms part of ...Read more