Procedure for driving hard headings with rail mounted loader (Conway) and boring rig report

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Includes diagram of boring pattern for 15ft rings Joy Sullivan rig

Archive Record|Table of contents

Douglas Simpson, Colliery Manager, PapersD624

Photographs and negativesD624/2

Abercynon CollieryD624/4/1

Abernant CollieryD624/4/2

Cwmgorse CollieryD624/4/3

Llanharan CollieryD624/4/4

Nantgarw CollieryD624/4/5

Taff Merthyr CollieryD624/4/6

National Coal BoardD624/4/7

TestsD624/4/8

Locomotives and machineryD624/4/9

ExplosionsD624/4/10

Intensive stonedriftingD624/4/11

Handwritten notes: ‘Intensive Drivage of Hand Meedings’D624/4/11/1

Procedure for driving hard headings with rail mounted loader (Conway) and boring rig reportD624/4/11/2

Progress records of tunnelling work in the United StatesD624/4/11/3

Correspondence between D. Simpson and H.J. Widdowson, C.H. Davis and G. Tomkins about visit to Thistleton Ironstone Mine, Leicestershire.D624/4/11/4

Article titled ‘Intensive Stonedrifting Methods Applied at Nantgarw Colliery’, written by D.N. Simpson, taken from Iron and Coal Trades ReviewD624/4/11/5

Correspondence between D. Simpson and R.G. Watt (Field Investigation Officer, National Coal Board)D624/4/11/6

DraftsD624/4/12

Other reportsD624/4/13

PapersD624/5

Plans, drawings, charts and diagramsD624/6

NotebooksD624/7

Handwritten notes and other papersD624/8

Social eventsD624/9

MagazinesD624/10

Catalogues and advertisementsD624/11

Information bookletsD624/12

Operating instructionsD624/13

CorrespondenceD624/14