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Now showing items 21-40 of 773

Survey report No. 102 The physical and chemical survey of the No. 2 seam at Transvaal Navigation colliery, Bethal district , Transvaal

Author: Berry, H Date: 1949 This colliery is situated on the farm Vlaklaagte 35, close to the northern boundary of the Bethal Magisterial District and approximately midway between the towns of' Witbank and Bethal. Read more
Survey report No. 96 Report on 12 boreholes drilled by Messrs. Sebato Investments, Ltd., on the farm Elandsfontein 8, district Witbank, in the years 1945 - 1946

Author: Savage, WHD Date: 1949 A series of 12 boreholes was drilled by Messrs.Sebato Investments Ltd. on the north-western portion of Elandsfontein 8 district in the years 1945 and 1946. Read more
Tests to determine the suitability of selected fuels in S.A.R. Dining saloon stoves

Author: La Grange, C.C ; Van Doornum, GAW Date: 1949 During 1948 the South African Railways and Harbors Administration approached the Institute with the request for collaboration in an investigation aimed at rendering fires in dining saloon stoves smokeless while trains were in large stations ... Read more
Washability and other characteristics of coal from the No. 5 seam Witbank colliery

Author: La Grange, CC ; Wolmarans, JJ Date: 1950 A bulk face sample (no. T124) of approximately 1 ton was taken on 12/4/1950 from the No. 5 seam, South African Witbank colliery at a point about 70 east of a point 100 south of peg 104. The seam here was about 69'' thick. Read more
The effects of cleaning on the analsis composition of the ash and ash fusion point of two coals from collieries in the South-Eastern portion of Witbank coalfield

Author: Savage, WHD Date: 1950 The work incorporated in this report was undertaken because of the introduction of new grading regulations governing the export of col from the Union, in which minimum analytical requirements for the several grades of coal were laid down. Read more
Washability and other characteristics of coal from the No. 5 seam coal (Run-of-mine) from nagcolliery

Author: La Grange, CC ; Wolmarans, JJ Date: 1950 According to information given by the Manager at navigation Colliery in May 1950, the mining height in the No. 5 seam is about 6 feet at the top of this consist of inferior material and is loaded into separate, specially marked tubs underground ... Read more
Oil bearing sandstone obtained from boreholes No. 1 on Kalabasvlakte 3749 Newcastle district

Author: Davis, PC ; La Grange, CC ; Coetzee, SD Date: 1950 During 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
A study of the operation of the cyclone washer and its application to Witbank fine coal

Author: Van der Walt, PJ Date: 1950 Although the union of South Africa possesses reasonably large reserves of coal of various qualities, the reserves of coking coal are comparatively small and are being exhausted at an alarming rate. The proven reserves of coking coal are ... Read more
The normal and halogen inhibited combustion at 850 °C of cokes of varying ash content

Author: Shuttleworth, RG Date: 1950 The combustion of carbonaceous fuels is now recognized as occurring by means of both a heterogeneous reaction and a homogenous reaction. Read more
Spontaneous heating of coal - summarized extracts from the literature

Author: La Grange, CC Date: 1950 The problem created by the spontaneous heating of coal has been receiving attention for more than 100 years and many investigators have worked on problems directly or indirectly associated with this phenomenon. Read more
Investigation of the possible formation of explosive mixtures during the impregnation of timber

Author: Blitz, JG ; Uys, JM ; Petrick, AJ Date: 1950 The introduction of oil mixtures for impregnating timber in which penta-chloro-phenol is the active medium and kerosene the major vehicle component caused some apprehensive that explosive mixtures might be formed in the impregnation vessels. Read more
Chlorination tests on South African coals

Author: Beyers, E ; Van Rooyen, D Date: 1950 Comparatively few investigators have studied the reaction of halogens with coal. Evidence was found that substitution and addition reactions occur and that more hydrochloric or hydro bromic acid may be formed than could be explained by a ... Read more
Routine methods of coal analysis the determination of the calorific value of a coal

Author: Coetzee, SD Date: 1950 The method adopted at the Institute is that laid down by the S.A. standards specification c.f. “The determination of the comparative calorific values of coals in South Africa.” Read more
Washability and other characteristics of coal from the No. 5 seam, South Witbank colliery

Author: La Grange, CC ; Wolmarans, JJ Date: 1950 This report details how coal from the No. 5 seam in the Witbank colliery was tested for washability and related characteristics. Read more
Weathering tests on coking coals

Author: Savage, WHD Date: 1951 The object of the investigation was to study the effect of weathering by exposure to the open air on the coking and chemical properties of the coal. Read more
Storage of coal with special reference to quality determination and spontaneous combustion

Author: La Grange, CC Date: 1951 Although the storage of coal is probably almost as old as its use and is practiced on a smaller or larger scale by all coal consumers, there are certain aspects and problems associated with coal storage, which require very careful consideration ... Read more
Research on coal cleaning in progress in Britian and on the continent

Author: Van der Walt, PJ Date: 1951 This report describes how the principal objectives were to gather data relating to the practical operation and application of the various coal cleaning processes and methods of screening, breaking and handling coal. Read more
The nitric acid oxidation of coal. Part 4 Application of the graphical-statistical method to the interpretation of the investigations on the nitrohumic acids

Author: Van Duuren, BL Date: 1951 A 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
The effect of variations in the moisture content on the float and sink analysis of large coal

Author: Van Eck, B ; Savage, WHD Date: 1951 In the present investigation samples of approximately cobble sized coal from five typical collieries in the major coal fields were taken. Read more
Storage of coal with special reference to quality deterioration and spontaneous combustion

Author: La Grange, CC Date: 1951 This paper investigates the storage of coal with regards to specifically coal deterioration and combustion properties. Read more

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