The Dry Cleaning of Coal

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Report No. 470

Authors D. C. Rhys Jones, W. Idris Jones

Archive Record|Table of contents

Records of Powell Duffryn LimitedDPD

Powell Duffryn Limited (formerly Powell Duffryn Associated Collieries Limited)DPD/1

Powell Duffryn Steam Coal Company LimitedDPD/2

Corporate and shareholdingDPD/2/1

FinanceDPD/2/2

Property and premisesDPD/2/3

StaffDPD/2/4

Agents department for the Rhymney Valley collieriesDPD/2/5

Ivor Williams' papers as chief engineer for the Rhymney Valley collieries, works and power stationsDPD/2/6

Correspondence and papers of managers of Bargoed coke ovens laboratoryDPD/2/7

Correspondence and papers of Joseph West, managerDPD/2/8

Records of research departmentDPD/2/9

Meeting of the Institute of FuelDPD/2/9/1

Low Temperature Carbonisation Laboratory InvestigationsDPD/2/9/2

The Knowles Process of Cracking and CokingDPD/2/9/3

Report of the Meeting about the Inhibitor Process (8th November 1933 at Wellington House, Buckingham Gate, London)DPD/2/9/4

Oil/Coal Dispersions and Visit to G. C. Hurrell & Co LTD (14th November 1933, Charlton, London)DPD/2/9/5

Winter Washes (Visit on the 30th November 1933 to 1, Great Tower Street, London)DPD/2/9/6

Visit to Gas Light and Coke Company’sDPD/2/9/7

The Corrosion of Transformer TubesDPD/2/9/8

The Use of Compressed Gas in Motor VehiclesDPD/2/9/9

Compressed Gas Traction (Visit to Mr Muir of Pontypridd Gas Company and Mr Richardson of Rhondda Transport Company)DPD/2/9/10

The Wyndham Process, Summary of InvestigationsDPD/2/9/11

Coal ClassificationDPD/2/9/12

The Wyndham Process at the Experimental Tredoman Works Plant, Ystrad MynachDPD/2/9/13

Presoment on Barges (Visit to Messrs WE. Cory and Sons, Erith)DPD/2/9/14

Synthatar ProductionDPD/2/9/15

Report on the Visit on the 9th April 1934 to the Fuel Research Board Station, GreenwichDPD/2/9/16

Tar Programme and Policy for 1934 and 1935DPD/2/9/17

Internal Combustion Engines – the Masdler SystemDPD/2/9/18

Experimental Work Carried Out on the British Rema Super Coal Classifier at the Tredomen WorksDPD/2/9/19

Knowles Process (Visit to Messrs Stewarts and Lloyds, Corby, Kettering)DPD/2/9/20

The High Temperature Carbonisation of Little Rock Vein and Gorllwyn Seam Coals from the Britannia CollieryDPD/2/9/21

Carbonised Coal Briquettes (Analytical and Combustion Properties of Pieter’s Synthracite Briquettes and also Illingworth’s Ovoids)DPD/2/9/22

Report on the Visit on the 5th September 1934 to the Cunard Buildings, LiverpoolDPD/2/9/23

Report on the Visit on the 7th September 1934 to Gateshead and Wallsend-on-TyneDPD/2/9/24

Report on the Visit on the 6th September to the British Rema Manufacturing Coy., HalifaxDPD/2/9/25

The Gunard Colloidal Fuel ProcessDPD/2/9/26

The Investigation of Coals Comprising Phurnod Part II (the behaviour of Aberdeen coals when burned in a domestic well-type grate)DPD/2/9/27

The Knowles Process (Visit on the 10th October 1934 to Messrs Stewarts and Lloyds Works, Corby, Kettering)DPD/2/9/28

Report on the Visit on the 11th October 1934 to the H.M. Fuel Research Centre, GreenwichDPD/2/9/29

The Investigation of Coals Comprising Phurnod Part III (the behaviour of Aberdeen coals when burned in a domestic grate supplied with a Suvius grate fitment)DPD/2/9/30

Laboratory Examnation of Medium Temperature Tar and Gas Spirit by the Carbonisation of a Balnd of Cwn and Aberdare Duffs (Produced at H.M. Fuel Research Station, East Greenwich)DPD/2/9/31

Synthetic Anthracite – Estimated Costs of ProductionDPD/2/9/32

The Investigation of Coals Comprising Phurnod Part IV (the ash softening points of coals examined)DPD/2/9/33

The Investigation of Coals Comprising Phurnod Part V (General Observations, Remarks and Recommendations resulting from a consideration of Parts I, II, III AND IV of the Investigation)DPD/2/9/34

Continuous Tar Distillation (Visit on the 8th January 1935 to the Wellingborough Gas Light Company)DPD/2/9/35

The Flocculation of Washery Water (Visit on the 29th January 1935 to the Emlyn Colliery Company LTD, Llanelly)DPD/2/9/36

The Carbonisation of Ovoids – Results of Research WorkDPD/2/9/37

Koppers Ovens Pontypridd – Revised Cost EstimatesDPD/2/9/38

Report of the Meeting on the 12th February 1935 with Mr H. P. Stephenson ofCoal and Allied Industries LimitedDPD/2/9/39

The Knowles Process (Visit on the 12th February 1935 to Messrs H. A Brassert & Company LTD)DPD/2/9/40

The Use of Coal as a Filler for Road TarDPD/2/9/41

The Blumner Colloidal Fuel ProcessDPD/2/9/42

Report on the Visit to the Dutch State Mines and Mannheim Power StationDPD/2/9/43

The Fischer Kogasin ProcessDPD/2/9/44

Energising of Coal and Coke – Hackford ProcessDPD/2/9/45

The Woidich or Carbonol ProcessDPD/2/9/46

The Haeck ProcessDPD/2/9/47

The Knowles Process – Results of Test on Tar/Coal Carbonisation and also Estimated CostsDPD/2/9/48

The Use of Coal (Ogilvie and Groesfaen) Dusts for CokingDPD/2/9/49

Colloidal Fuel – Tests on S/S BerengeriaDPD/2/9/50

The Production of Smokeless Domestic Fuel Part 1 (Tests in Koppers Ovens, Pontypridd)DPD/2/9/51

Gas for Fischer ProcessDPD/2/9/52

The Production of Smokeless Domestic Fuel Part 4DPD/2/9/53

Colloidal Fuel – Tests at Wallsend 14th-17th January 1935DPD/2/9/54

Robinson Sindley Process Oil from Industrial Gas (Tests at Epsom 10th-11th January 1936)DPD/2/9/55

Flocculation Plant Test on the14th-18th January 1936, Duffryn Rhondda Washery by the Emlyn Anthracite Colliery LimitedDPD/2/9/56

Flocculation Plant Test on the 6th-15th February 1936, Duffryn Rhondda WasheryDPD/2/9/57

Colloidal Fuel – Tests at Wallsend 11th-12th March 1936DPD/2/9/58

The Production of Synthetic Lubricating Oils Etc. (Visit on the 18th March 1936 to Professor Nash, Birmingham University)DPD/2/9/59

Interim Report on Coal Breaking Tess at Elliot and Llanharan CollieriesDPD/2/9/60

The Breaking of CoalDPD/2/9/61

The Dustproofing of CoalDPD/2/9/62

The Examination of the Coking Properties of the Britannia Rock Vein SeamDPD/2/9/63

Coke for Water Gas Production for the Fischer SystemDPD/2/9/64

Tests on S/S/ Berengeria, Southampton, 8th-10th June 1936DPD/2/9/65

Summary of Reports Issued During 1935 and 1936 on Low Temperature Carbonisation and Colloidal Fuel Processes Together With Various Modern Oil-From-Coal ProcessesDPD/2/9/66

The Breaking of CoalDPD/2/9/67

Coke and Gas for Fischer SynthesisDPD/2/9/68

New Test for Determining the Burning Characteristics of CoalDPD/2/9/69

Domestic Fuel Part 5DPD/2/9/70

The Characteristics of Pitch Used for Briquetting (A Comparison between samples of Pitch from Bargoed Coke Ovens and Midland Tar Distillers LTD, Langley Green)DPD/2/9/71

Test of the Flocculating Plant at Llanharan CollieryDPD/2/9/72

Report on the Visits to the Gas Light and Coke Company, Beckton, Hardman’s of Hull and Dorman Long’s Tar Plant at Port ClarenceDPD/2/9/73

Coal Breaking VIDPD/2/9/74

Domestic Fuel Part 7DPD/2/9/75

Fuel for Gas Generator VehiclesDPD/2/9/76

The Salerni Process of Low Temperature CarbonisationDPD/2/9/77

Flocculating Plant at Maritime WasheryDPD/2/9/78

Development of Laboratory Tests on the Burning Characteristics of P.D.A.C. CoalsDPD/2/9/79

Dustproofing of Coal (II) – Coal for Briquetting with PitchDPD/2/9/80

Examination of the Coking Properties of the Graig Seam CoalDPD/2/9/81

The Tromp Coal Washing ProcessDPD/2/9/82

Full Scale Coking Tests at Maritime Coke WorksDPD/2/9/83

The Examination of a Sample of Welsh Navigation Foundry CokeDPD/2/9/84

Colloidal Fuel Summary of Work on the 31st January 1938DPD/2/9/85

Hydrogenation by means of Nascent Electrolytic Hydrogen (The Thomas-Davies Proces)DPD/2/9/86

The Wetting of DustsDPD/2/9/87

Domestic Fuel (Large Scale Tests at Maritime Works)DPD/2/9/88

Report on the Visit to Works of Hull Distillery Co. LTD, and British Solvents LTDDPD/2/9/89

Foundry Coke Production, the Effect of Carbonising Time and TemperatureDPD/2/9/90

Report on the Visits on the 16th-23rd May 1938 to Holland, Germany and BelgiumDPD/2/9/91

Dustproofing of Coal (III) – Coal for Briquetting with Pitch, Large Scale TestsDPD/2/9/92

Dustproofing of Coal (IV)DPD/2/9/93

Examination of Crynant CoalDPD/2/9/94

Manufacture of Small OvoidsDPD/2/9/95

The Illingworth ProcessDPD/2/9/96

Report on the Examination of Scunthorpe CoalDPD/2/9/97

The Dupont Sink and Float SeparatorDPD/2/9/98

The Production of Synthetic ResinsDPD/2/9/99

The Microducing Process (Visit on the 13th September 1938 to the Buell Combustion Company LTD)DPD/2/9/100

A Comparison of the Tromp and Barvoys Coal Washing ProcessesDPD/2/9/101

Aberdare DuffDPD/2/9/102

Aberdare Large CoalDPD/2/9/103

Methanol Synthesis Ex Lurgi GasDPD/2/9/104

The Production of Breaker CobblesDPD/2/9/105

Report on the Visit on the 24th November 1938 to the Wilton Continuous Tar Distillation Plant, Fort Clarence, MiddlesbroughDPD/2/9/106

The Experimental Chance Washer at Erith Test for Powell Duffryn Associated Collieries LimitedDPD/2/9/107

Colloidal Fuel Preliminary Trials with Micronised Coal and Britoleum OilDPD/2/9/108

Coke BreakingDPD/2/9/109

London Power Company Coal Dump at DagenhamDPD/2/9/110

Micronised Coal Experiments with the MicroniserDPD/2/9/111

Examination of English Coking Coals (i.) Parkgate Brights ex Manvers Main Colliery, South Yorkshire ii.) Blend of Parkgate and Silkstone Brights ex Aldwarke Main Colliery, South Yorkshire iii.) Blend of Tupton and Black Shale coals ex Hardwick Main Colliery, South Yorkshire)DPD/2/9/112

Phurnacite ActivationDPD/2/9/113

Power Duff Production at TymawrDPD/2/9/114

Preliminary Report on Fuels for Producer Gas TractionDPD/2/9/115

Powell Duffryn Flocculating Agent, August 1939, Duffryn RhonddaDPD/2/9/116

Flocculating Plant for Bargoed WasheriesDPD/2/9/117

English Coking Coals – The Use of Elliot and Cwm Duffs for BlendingDPD/2/9/118

Producer Gas Traction No. 1 – The Breaking of Medium Temperature CokeDPD/2/9/119

The Enrichment of Anthracene Salts (Part II of Report No. 443)DPD/2/9/120

Producer Gas Traction No. 3 - Tests in Gohin Poulenc ProducerDPD/2/9/121

Phurnacite ActivationDPD/2/9/122

Phurnacite – Availability of Suitable CoalDPD/2/9/123

Producer Gas Traction No. 5 – Carbonised Dry Steam PeasDPD/2/9/124

Producer Gas Traction No. 6 – The Manufacture of Carbonised OvoidsDPD/2/9/125

Producer Gas Traction No. 4 – Effect of Steaming During CarbonisationDPD/2/9/126

Choke Fed Rolls (Visit on the 2nd July 1940 to Billingham)DPD/2/9/127

Treatment of Washery Water II – Slurry Cyclones and Increased Slurry Dewatering at PenalltaDPD/2/9/128

Phurnod Production (Maerdy and Ferndale Coals)DPD/2/9/129

Producer Gas Traction No. 7 – Report on the Performance of the Converted P. D. A. C LorryDPD/2/9/130

Phurnacite – The Carbonisation of Ovoids Manufactured from BlendsDPD/2/9/131

Producer Gas Traction No. 8 – The Carbonisation of Peas and Beans at Middle Duffryn Fuel WorksDPD/2/9/132

Phurnacite – Availability of Suitable Coal IIDPD/2/9/133

The Softening Points of Pitches from Various Crude TarsDPD/2/9/134

The Design of ChutesDPD/2/9/135

The Dry Cleaning of CoalDPD/2/9/136

The Peatose Process – Cost of ProductionDPD/2/9/137

Carbonisation of Windsor Upper Six Feet CoalDPD/2/9/138

The Production of SlurryDPD/2/9/139

The Rubber Belt Coal ConveyorDPD/2/9/140

The Examination of Graigola CoalsDPD/2/9/141

The Carbonisation of CobblesDPD/2/9/142

Preparation of Flocculating ReagentsDPD/2/9/143

Fine Coal Washing – The Use of Clarified Water in M.S. Froth Flotation WashersDPD/2/9/144

The Manufacture of PyridineDPD/2/9/145

The Manufacture of AnthraceneDPD/2/9/146

General Working Plan of the Tar Distillation Plant at OstravaDPD/2/9/147

Carbolic and Cresylic Acids Plant at OstravaDPD/2/9/148

Carbolic Oil from CaerphillyDPD/2/9/149

Carbon BlacksDPD/2/9/149B

Naphthalene PlantDPD/2/9/150

Short Description of the Distillation Plants, Boilers, Storage Tanks etc. at OstravaDPD/2/9/151

Carbonisation of Windsor Six Feet CoalDPD/2/9/152

Dust and SlurryDPD/2/9/153

Producer Gas Manufacture – Use of Dry Steam CoalsDPD/2/9/154

Liquid Methane (Visit to Donald Bagley Limited)DPD/2/9/155

The Production of Refined MapthaleneDPD/2/9/156

Use of Caerphilly Tar Plant Oils in Froth Flotation PlantsDPD/2/9/157

Recent Developments in Oil TreatmentDPD/2/9/158

The Holmes Jaffhor Dust ExtractorDPD/2/9/159

Treatment of Washery Water Performance of Slurry Cyclone at PenalltaDPD/2/9/160

Treatment of Washery Water Performance of Slurry Cyclone at PenalltaDPD/2/9/161

Characteristics of the Petroleum Oils of the WorldDPD/2/9/162

Pipe Colour and Kiln AtmosphereDPD/2/9/163

Liquid Methane Visit to Holditch CollieryDPD/2/9/164

Study of Coal – Pitch MixturesDPD/2/9/165

An Examination of the Penllwyngwent CoalsDPD/2/9/166

Maritime Washery SlurryDPD/2/9/167

Cardiff Gas Works TarDPD/2/9/168

The Manufacture of Briquetted FuelsDPD/2/9/169

The Manufacture of Briquetted FuelsDPD/2/9/170

A Study in Briquetting Influence of Briquetting PressureDPD/2/9/171

The Peatose Briquetting ProcessDPD/2/9/172

An Examination of the Wyndham Colliery CoalsDPD/2/9/173

Visit to Coryton Oil DepotDPD/2/9/174

Briquetting of Petroleum Coke with Bitumen Binder - Trinidad Leaseholds LimitedDPD/2/9/175

An Examination of Scottish Semi- Anthracites from the Point of View of their Suitability for Phumacite ManufactureDPD/2/9/176

The Examination of Wetting Agents for ClayDPD/2/9/177

Visit to Research Department, Metropolitan Vickers Ltd, Trafford Park, July 20th, 1944DPD/2/9/178

Visit to Research Department, Metropolitan Vickers Ltd, Trafford Park, July 20th, 1944DPD/2/9/179

Visit to Trimpell Ltd, Heysham Lancs. July 18th, 1944DPD/2/9/180

Visit to Trimpell Ltd, Heysham Lancs. July 18th, 1944DPD/2/9/181

Visit to Trimpell Ltd, Heysham Lancs. July 18th, 1944DPD/2/9/182

The Characteristics of Some Representative Samples of Adhesive EmulsionDPD/2/9/183

Visit to Trimpell Ltd, Heysham, Lancs. July 18th, 1944DPD/2/9/184

Visit to Trimpell Ltd, Heysham, Lancs. July 18th, 1944DPD/2/9/185

‘Adhesive Emulsion’DPD/2/9/186

‘Adhesive Emulsion’DPD/2/9/187

Visit to Research Department. Lever-Unilever Ltd. Port Sunlight. July 21st, 1944DPD/2/9/188

Examination of Kent coals being the substance of a Powell Duffyn Limited Research Department ReportDPD/2/9/189

Production of town gas at Nantgarw.DPD/2/9/190

Fuel Briquettes- Burning characteristics.DPD/2/9/191

Briquetting: Particle size distribution in relation to the strength of pitch bound briquettesDPD/2/9/192

High Efficiency FractionationDPD/2/9/193

Coal washery design. The close circulation system.DPD/2/9/194

The examination of Caerphilly pitch, Pt 1DPD/2/9/195

The examination of Caerphilly pitch, Pt 3DPD/2/9/196

The Examination of Tydraw CoalsDPD/2/9/197

The production of 40% antheracene by the Dorman Lord processDPD/2/9/198

Barger core ovensDPD/2/9/199

Briquetting: The use of the ‘Packer’ on the experimental RollsDPD/2/9/200

Hydraulic stowing, Laboratory InvestigationsDPD/2/9/201

An examination of Scunthorpe coalsDPD/2/9/202

The oxidisation of coal tar hydrocarbonsDPD/2/9/203

An examination of north’s oven chargeDPD/2/9/204

Welsh Associated Collieries LimitedDPD/3

Records of acquired companies and subsidiariesDPD/4

Housing societiesDPD/5