and engineering journal . ehigher. Development operation- were further incnwith satisfactory reef disclosures. The Board hi -not to resume shaft-sinking in the new Circular Shalt aipresent, but the matter will be reviewed again early in nextyear. DAVIS - MADE JOHN DAVIS & SOX (DERBY), LIMITED. THE DAVIS SELF-RECORDING STEELTUBE MERCURYTHERMOMETER OR PYROMETER with Flexible Connecting Tube. Supplied in nickel-plated Iron esse, 9in. outside diameter, 8in. chart: arranged for 12 or 2-t hours record as required. For super-heated steam this instrument is provided with an iron protection t
and engineering journal . ehigher. Development operation- were further incnwith satisfactory reef disclosures. The Board hi -not to resume shaft-sinking in the new Circular Shalt aipresent, but the matter will be reviewed again early in nextyear. DAVIS - MADE JOHN DAVIS & SOX (DERBY), LIMITED. THE DAVIS SELF-RECORDING STEELTUBE MERCURYTHERMOMETER OR PYROMETER with Flexible Connecting Tube. Supplied in nickel-plated Iron esse, 9in. outside diameter, 8in. chart: arranged for 12 or 2-t hours record as required. For super-heated steam this instrument is provided with an iron protection tube 6in. long and screwed fin. gas, but extra length can be provided at an additional cost. The tube is filled with mercury or iron filings, but can only be used in a position where it can be suspended verti cally, not horizontally or inverted. To specify Davis Thermometers is to take no risks. Sole Agents for South Africa: BARTLE & CO. LTD., Loveday House. Box 2466. Phone 355S. JOHANHESBTJRQ. And at .ind HIGHEST GRADE 282 THE MINING AND ENGINEERING JOURNAL. JWg, October 29, f RYLANDS STEEL WIRE ROPES MANUFACTURED BY: RYLANDS BROTHERS, LTD., WARRINGTON, REPRESENTATIVES FOR UNION OF SOUTH AFRICA:— ARMSTRONGS & MAIN, LTD., 84, Marshall Street,JOHANNESBURG. BOX 598S. PHONE 5203. LARGE STOCKS ON HAND. SPECIALISTS IN THE MANUFACTURE AND DESIGN OF STRUCTURAL STEELWORK. ARMSTRONGS & MAIN, LTD., GENERAL AND CONSTRUCTIONAL ENGINEERS, 84, Marshall Street,JOHANNESBURG. BOX 5988. TELEPHONE 5203. tjburg, October 29, 1921 THE MINING AND ENGINEERING JOURNAL 28 Prospecting Activities inSouth-West Africa. A report from Port Nolloth states thai important mineraldiscoveries have been made bj a prospector in thai qibourhood. He reports having found gold nu|
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries
