ABSTRACT
PRODUCT DATA Rock type Olivine Dolerite Colour Dark grey, dark green Grain Fine Products Crushed Stone Asphalt or Tarmacadam DRILLING DATA Hole Diameter 105mm Bench Height 12m Contractor A Jones Rock Drillers SECONDARY BREAKING Hydraulic Hammer LOAD AND HAUL Trucks (2) Aveling Barford RD30 Loaders Michigan CRUSHING PLANT Primary Kue Ken 120 Secondary (2) Allis Chalmers Cone Tertiary (2) Allis Chalmers Cone
JOHNSTON ROADSTONES LTD
Leinthall Earls, Wigmore, Leominster, Hereford & Worcs HR6 9TR Phone 0568 86521 OS Map 149 OS Grid Reference SO442682 Personnel P James, Unit Manager
PRODUCT DATA Rock type Silurian Limestone Colour Not commercially significant Product Crushed Stone DRILLING DATA Hole Diameter 105mm Bench Height 21m Drills Halco 400 COMPRESSORS Ingersoll-Rand 700
Loaders Caterpillar 9660 CRUSHING PLANT No information given
R A JONAS AND SONS Head Office Tredennick Downs Quarry, St Issey, Wadebridge, Cornwall PL27 7QZ Phone 0841 540332 Personnel R A Jonas, Owner Quarries Tredennick R A JONAS AND SONS
St Issey, Wadebridge, Cornwall PL27 7QZ Phone 0841 540332 OS Map 200 OS Grid Reference SW925705 Personnel R A Jonas, Owner and Unit Manager
PRODUCT DATA Rock type Devonian Slate Colour Fawn, red Grain Fine Product Dressed or Lump Stone DRILLING DATA Hand-held equipment
D GWYNDOF JONES Head Office Vronlog Quarry, Llanllyfni, Caernafon, Gwynedd LL54 6RT Phone 0286 880574 Personnel D Gwyndof Jones, Owner Quarries Vronlog D GWYNDOF JONES
Llanllyfni, Caernafon, Gwynedd LL54 6RT Phone 0286 880574 OS Map 115 OS Grid Reference SH487518 Personnel D Gwyndof Jones, Owner and Unit Manager
PRODUCT DATA Rock type Cambrian Slate
Product Dressed or Lump Stone DRILLING DATA Hole Diameter 32-38mm Hand-held equipment COMPRESSORS CompAir
D JONES (FFYNON PLANT HIRE COMPANY LTD) Head Office Mynydd y Garreg Quarry, Crymmych, Dyfed SA41 3QS Phone 0239 73223 Personnel D A Jones, Managing Director Quarries Mynydd y Garreg D JONES (FFYNON PLANT HIRE COMPANY LTD)
Crymmych, Dyfed SA41 3QS Phone 0239 73223 OS Map 159 OS Grid Reference SN434085 Personnel D A Jones, Managing Director and Unit Manager
PRODUCT DATA Rock type Carboniferous Millstone Grit Colour Not commercially significant Grain Medium Product Crushed Stone DRILLING DATA Hole Diameter 105mm Bench Height 7-1 Om Contractor Ritchies Equipment SECONDARY BREAKING Dropball on Ruston-Bucyrus 22-RB LOAD AND HAUL Trucks Komatsu Loaders Fiatallis CRUSHING PLANT Primary Goodwin Barsby Jaw Secondary Marsden Jaw
K W & H E KEATES Head Office 31 Easington Road, Worth Matravers, Swanage, Dorset BH19 3LF Phone 092943 207 Personnel K W Keates, Director Quarries Keates K W& H E KEATES
