188 THE COLLIERY GUARDIAN July 26, 1918. THE COLLIERY GUARDIAN Monthly List of Recent Coal Literature. I.—General. Chilean Coal Mining Industry. “Iron Coal Tr. Rev.,” July 5, p. 6. (From “ British and Latin American Trade Gazette.) Paper on a Modem Colliery. G. Hann. “ Proc. S. Wales Inst. Engin.,” Vol. 34, No. 2, p. 215 ; 6 fig. Coal Mine Photography. H. A. Williamson. “ Coal Age,” June 8, p. 1053; June 15, p. 1107; June 22, p. 1148. Lubrication as an Aid in Stimulating Coal Production. R. Trautschold. “ Coal Age,” June 15, p. 1112. The Dombrova Coal Fields. A. E. Gurney. “ Colliery Guard.,” July 19, p. 122. II. —Education. Coal Mining Instruction in the Evening Schools of Derby- shire and Leicestershire. G. Forster. “ Iron Coal 'Tr. Rev.,” July 12, p. 34. (Paper read before Midld. Brch. Natl. Assocn. Colly. Mgrs.) III. —Geology. The Palaeozoic Platform Beneath the London Basin and Adjoining Areas, and the Disposition of the Mesozoic Strata upon it. H. A. Baker. “ Iron Coal Tr. Rev.,” July 12, p. 29; July 19, p. 57. IV.—Mine Surveying. The Future Aspect of Mine Surveying. J. Proctor. Colliery Guard.,” July 19, p. 121. VI.—Working of Minerals. Working a Thin Seam by Coal Cutters and Face Con- veyors. S. T. Boam. “Iron Coal Tr. Rev.,” July 5, p. 12 ; 2 fig. (Paper read before S. Midld. Brch. Natl. Assocn. Colly. Mgrs.) Present Illinois Coal Mining Industry. G. H. Cady. “ Coal Age,” June 22, p. 1142; 5 fig. Care and Management of Coal Cutters. “ Coal Age,” June 15, p. 1108. Extracting Coal Pillars from Fiery Seams. R. H. Husband. “ Colliery Guard.,” July 5, p. 18; 2 fig. VII.—Boring, Shaft Sinking, and Tunnelling. Coal Mining Developments in Spain. “ Colliery Guard.,” July 5, p. 30. The Cementation Process at the Hatfield Main Sinking. H. N. Berry. “Iron Coal Tr. Rev.,” July 12, p. 38. (Paper read before Yorks Brch. Natl. Assocn. Colly. Mgrs.) Some Experiences with a Borehole. A. W. Hesse and K. M. Quickel. “ Coal Age,” June 22, p. 1146. Cementation Repair Work. “Iron Coal Tr. Rev.,” July 19, p. 69. (Discussion by Yorks Brch. Natl. Assocn. Colly. Mgrs.) Cementation Process Applied to Mining. A. H. Krynauw. “JI. Chem. Met. and Min. Soc. S. Africa,” May, p. 256; 10 fig. IX.—Timbering, Packing, etc. Further Notes on Sandfilling of Mines. C. H. Greathead. “JI. Chem. Met. Min. Soc. S. Africa,” April, p. 236; 6 fig- Some Notes on Roof Conditions at Lethbridge Colliery. J. B. De Hart. “Bull. Can. Min. Inst.,” June, p. 541; 4 fig. Timber Industry. P. Groom. “ JI. Roy. Soc. Arts,” July 5, p. 515. Steel Prop Straightening Machine. “ Iron Coal Tr. Rev.,” July 19, p. 70 ; 1 fig. Notes on Sand-filling in Mines. C. H. Greathead. “Colliery Guard.,” July 19, p. 125; 6 fig. (From “JI. Chem. Met. and Min. Soc. S. Africa.”) X. —Surface Arrangements. Electric Signals on a Modern Tipple. F. Huskinson. “ Coal Age,” June 8, p. 1055 ; 5 fig. Gravity Track Systems at Anthracite Coal Breakers. F. N. Rupprecht. “ Coal Age,” June 8, p. 1063; 7 fig. Coal Tipple for Small Operations. H. B. Mosley. “ Coal Age,” June 8, p. 1046; 3 fig. XI. —Winding and Haulage. Hoisting Coal in Skips. J. A. Garcia. “ Coal Age,” June 22, p. 1150 ; 7 fig. Rotary Underground Tipples. “ Colliery Guard.,“ July 19, p. 135; 1 fig. (From “ Coal Age.”) XIV.—Ventilation. Blower Fans in Gangway Driving. W. L. Cross. “ Coal Age,” June 22, p. 1156. XV.—Mine Gases, Testing. Some Results of Analysis of Airs from Mine Fires. A. G. Blakeley and H. H. Geist. “JI. Ind. Eng. Chem.,” July 1, p. 552. Blackdamp in Mines. “ Colliery Guard.,” July 5, p. 25. Measuring Air and Gases with the Pitot Tube. A. H. Anderson. “ Colliery Guard.,” July 19, p. 126. (From “ Compr. Air Mag.”) XVI.—Coal Dust. The Rushton Stone Dusting Machine. “ Colliery Guard.,” July 5, p. 20; 1 fig. XVI I.—Explosions. Springhill Firedamp Explosion : Inspector’s Report. “ Colliery Guard.,” June 28, p. 1298; 1 fig. XVI11.—Mine Fires. Engineering Problems Encountered During Recent Mine Fire at Utah-Apex Mine, Bingham Canyon, Utah. V. S. Rood and A. J. Norden. “ Bull. Amer. Inst. Min. Engin.,” June, p. 1093; 3 fig. XX.—Drainage, Pumping, etc. Hoisting Water in Tanks by Electricity. G. W. Harris. “ Coal Age,” June 15, p. 1094; 9 fig. XXL—Preparation. Fines Washing Plant at Llwynypia Colliery. “ Iron Coal Tr. Rev.,” July 5, p. 14; 2 fig. The Rheolaveur. W. Galloway. “ Proc. S. Wales Inst. Engin.,” Vol. 34, No. 2, p. 105; 7 fig. New American Washery. W. L. Cross, Junr. “ Colliery Guard.,” July 19, p. 123; 1 fig. (From “ Coal Age.”) The Science of Coal Washing. “ Colliery Guard.,” July 19, p. 129. XXI11.—Coke Ovens and By-Products. A “Dry” Gas Producer. M. Brautigam. “Iron Coal Tr. Rev.,” July 5, p. 13; 1 fig. (From St. u. E.) De-benzoling Plant for Gas Works. “ Chem. Eng.,” June, pp. 137-8 ; 1 fig. By-Product Coke Industry in War Time. W. H. Blauvelt. “Iron Age,” June 13, pp. 1544-5. Benzol Products in Tar. “ Times Eng. Suppt.,” June, p. 126. Constructive Distillation. “ Gas Wld,” July 20, p. 31. (Steaming Continuous Vertical Gas Retorts.) The Carbonisation and Distillation of Peat. C. Galaine and C. Houlbert. “ Colliery Guard.,” July 5, p. 18. (From paper read before Paris Academie des Sciences.) Coke Oven By-Products in 1917. “ Colliery Guard.,” July 12, p. 69. (Chief Inspector’s Report.) Silica Bricks. M. Bied. “ Colliery Guard.,” July 12, p. 71. (From “ Comptes Rendus.”) Distillation of Peat. E. Hauser. “ Colliery Guard.,” July 12, p. 72. (From “ Revista Minera.”) The Thermal Decomposition of Coal and its Carbonisa- tion Products. M. C. Whitaker and J. R. Suydam, Junr. “ Colliery Guard.,” July 19, 124. Carbocoal. C. T. Malcolmson. “ Colliery Guard.,” July 19, p. 127. (From paper presented to Amer. Inst. Min. Engin.) Gasifying Coal Completely. “ Times Eng. Suppit.,” July, p. 14. XXIV.—Fuels, Testing, etc. Monograph on the Constitution of Coal. M. C. Stopes and R. V. Wheeler. H.M. Stationery Office, London; 2s. Constitution of Coal. “ Colliery Guard.,” June 28, p. 1305. Burning Anthracite Slush. “ Colliery Guard.,” July 5, p. 20. (From “ Coal Age.”) XXV.—Steam Engines and Boilers: Gas Engines. A New Theory of the Steam Turbine. “Eng.,” July 5, p. 1; July 19, p. 52; 3 fig. Coal Saving by the Scientific Control of Steam Boiler Plants. D. Brownlie. “Eng.,” July 12, p. 25; July 19, p. 55. Self-contained Forced Draught Stoker. ’“ Eng.,” July 19, p. 62. Four-Cycle v. Two-Cycle Diesel Engines. “ Eng.,” June 28, p. 727. Some Notes on Gas-firing Boilers. T. M. Hunter. “ Proc. S. Wales Inst. Engin.,” Vol. 34, No. 2, p. 127. Combined Coal and Gas Firing. M. Meredith. “ Coal Age,” June 22, p. 1147. (Plant at Mond Gas Co.’s Works, Dudley Port.) The Working of Superheaters. E. Ingham. “ Cheap Steam,” July, p. 51. Exhaust Steam Turbine Installations at Coal Mines.—I. E. J. Roberts. “ Coal Age,” June 8, p. 1049; June 15, p. 1101; 3 fig. Saving Our National Resources by Using Pulverised Fuel. “ Compr. Air Mag.,” June, p. 8781 ; 1 fig. C02 Recorders in the Boiler House. J. B. C. Kershaw. “ Engin.,” June 19, p. 45; 10 fig. Small Steam Turbines. J. Humphrey. “ Iron Coal Tr. Rev.,” July 19, p. 59 ; 2 fig. A Uniflow Engine Installation. “ Iron Coal Tr. Rev.,” July 19, p. 63; 2 fig. Steam Pipe Explosions. E. Ingham. “ Colliery Guard.,” June 28, p. 1297; 4 fig. Air-carried Powdered Coal. “ Colliery Guard.,” July 12, p. 71; 2 fig. (From “ Iron Age.”) Pulverised Coal for Industrial Purposes. J. Cunliffe. “ Colliery Guard.,” p. 82. (From paper read before Vancouver Chbr. of Commerce.) Checking Losses in Flue Gases. “ Colliery Guard.,” July 19, p. 126. (From “Meeh. Chem. Eng.”) Steam Plant Design. “ Times Eng. Suppit.,” July, p. 147. Heavy Oil Engine. “ Times Eng. Suppit.,” July, p. 154. (New American type.) Gas for Raising Steam. “Times Eng. Suppit.,” July, p. 146. XXVI.—Compressed Air. Testing Air Compressors. N. S. Tennant. “Eng.,” July 5, p. 8; 5 fig. Testing an Air Compressor. W. S. Weeks. “ Compr. Air Mag.,” June, p. 8776; 4 fig. (From “Mining and Scientific Press.”) Pneumatic Tampers Loosen Frozen Coal. H. L. Hicks. “ Compr. Air Mag.,” June, p. 8788; 4 fig. XXVIL—Electricity. The Consideration of Items of Practical Importance in Connection with Mining Electrical Engineering. C. Jones. “Proc. S. Wales Inst. Engin.,” Vol. 34, No. 2, p. 159 ; 29 fig. Remote Control for Squirrel Cage Motors. L. E. Wood. “ El. Rev.,” July 12, p. 27 ; 3 fig. Electricity in Mining. L. Fokes. “Sc. and Art Min.,” June 29, p. 438 ; July 13; 13 fig. Colliery Cable Suggestions. A. R. Davies. (Paper read before Midld. Brch Assocn. Min El. Engin.) The Safe Operation of Power Plant Switchboards. L. Fokes. “ Colliery Guard.,” July 5, p. 17; July 12, p. 72; 17 fig. Earthing Electrical Services in Mines. “ Colliery Guard.,” July 12, p. 70; July 19, p. 136. XXVI11.—Surface Transport and Storage. Self-propelled Low Clearance Shovelling Machine. “Eng.,” July 12, p. 32; 4 fig. Labour-saving Coal Handling for the Factory Power House. R. Trautschold. “Ind. Man.,” June, p. 447; 6 fig. Coal Transport Reorganisation and the Railway Com- panies. “Ry. Gaz.,” June 28, p. 746. The New Gravity Bucket Conveyor of Messrs. Fraser and Chalmers, Erith. G. F. Zimmer. “Eng.,” June 28, p. 718 ; 4 fig. Economic Handling of Ashes. R. Trautschold. “ Ind. Man.,” July, p. 17 ; 4 fig. How to Move Materials by Machinery. E. J. Edsall. “ Ind. Man.,” July, p. 42; 22 fig. (Coal Handling Plants.) 35-Ton Wagon Hoist at Acklam Works. “ Iron Coal Tr. Rev.,” July 19, p. 67; 2 fig. XXIX. —Sanitation, Diseases, etc. Silicosis. “ Colliery Guard.,” July 12, p. 78. XXX. —Mining Laws, Royalties. Workmen’s Compensation (Silicosis) Bill. “ Colliery Guard.,” June 28, p. 1302. LABOUR AND WAGES. South Wales and Monmouthshire. Owing to the limitation which the Controller imposed on the freedom of employers in dealing with the salaries of the managing, clerical, or administrative staffs, the unfairness of the position in comparison with that of the miners has been emphasised by the recent further addition to the workmen’s wages—more especially as, in response to an enquiry, notification was made that the war wage of June 30 did not apply to clerical or administrative staffs above deputies, firemen, and examiners. On the contrary, for members of these staffs an award of the Committee on Production would be necessary unless agree- ment were made previously with the Controller’s approval. The advances granted to them have been : For males under 18, 10s. per week; over 18, 20s. ; females under 18, 6s. 6d. ; over 18, 13s. ; while bonuses to members of staff already receiving more than £500 a year needed special sanction. It has been necessary, therefore, to approach the Controller because of disquiet which has been occasioned by the more favourable terms of the workmen, and there is a desire that the restrictions which are in operation shall be varied. The colliery examiners are still in a condition of unrest, and discussion is current amongst them as to the proposal which the employers made at the recent conference. It is stated that the house coal and anthracite firemen are offered 5s. per week less than the steam coal firemen, although it is urged that the work of the latter is no more arduous than their own. Then there is the demand for a six-day week, and also requirement that bonuses should be paid equal to the miners’ percentages. The question as to employment of non-unionists is also raised, antagonism being expressed to those being engaged. At a meeting of the executive committee of the Engine- men, Stokers’, and Craftsmen’s Association, held in Car- diff last week, a report was submitted concerning an inter- view which representatives had had with the Prime Minister and the Coal Controller. The National Council of Mine Workers (other than miners) have approached them with regard to an application for 25 per cent, increase on wages, a demand to merge all war bonuses into the standard, also payment of the war wage on all shifts worked, and an eight-hour day for all men engaged in the mechanical departments at the collieries. It was stated that there was danger of a strike which will become general—as many as perhaps 100,000 men being concerned —unless satisfactory terms are arranged. Another meet- ing is to take place with the Coal Controller during the next few days for further discussion; but meanwhile the different branches of the organisation throughout the country are being consulted aS to future action in case of no settlement being arrived at. A curious position arose under the price control orders due to a difference of date between their operation and the operation of the recent advances in wages to the miners. The workmen were to have their new war rates as from July 1, but the coal owners were authorised to charge the extra price of Is. 6d. per ton only from July 8. Represen- tation being made to the Controller, he has now notified the colliery companies that this mistake has been rectified. It was reported at Newport Police Court last week, during the hearing of summonses against income tax defaulters, that the men before the. court and .engaged as boiler makers earned £7, <£9, and even <£14 per week. In one case the man was stated to have earned £82 in one quarter, and a transport worker had earned £78 between April 26 and June 4. The usual orders for payment\>f the tax, or, in default, imprisonment, were made. A deputation from the anthracite district waited upon the executive council of the Federation concerning alleged victimisation at the Duffryn Amman Colliery; and after hearing the statement submitted it was resolved that Messrs. E. Morrell and Noah Ablett should make investigation. With regard to recent proceedings against workmen at the Mardy Colliery whereat damages were given against the employees, a deputation waited upon the executive desiring its intervention. It being reported, however, that the men had put in their notices, a resolu- tion was passed requiring them to withdraw the notices, and a promise was made that the council would then endeavour to deal with the question of damages. A patent coupling was exhibited and explained to the executive by Mr. W. A. Davies, it being intended to prevent haulage rope accidents, and the members of the council, after examination, gave a favourable opinion, considering that it would add to the safety of working. Another exhibit to the executive council was that of Mr, R. Cushin, who had a safety apparatus for dealing with the breakage of winding ropes, and it was suggested to him that he should submit his invention to the Home Office representative for testing. The miners of Ebbw Vale district met on Saturday evening and discussed certain grievances which were alleged to ex’st in their area, but they were not able to complete the work, and adjournment till Sunday afternoon was ordered. This took the form of a mass meeting, but no decision was announced. North of England. At the request of the Coal Controller, the executive com- mittee of the Northumberland Miners’ Association is urging the members not to exceed one day’s holiday in the August Bank Holiday week and to return to work on the Tuesday morning. Representatives of the North of England Steamship Owners’ Association, the Sunderland Shipowners’ Asso-