804104 Extraction of seams in protective pillars of shaft in the Ostrava-karvina basin (in Czech)

804104 Extraction of seams in protective pillars of shaft in the Ostrava-karvina basin (in Czech)

66A 804092 SELBY DRYING UP Colliery Gusrd, V226, N1, Jan 1980, P4 Reports briefly on remedial measures being taken to combat flooding of the Wistow N...

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804092 SELBY DRYING UP Colliery Gusrd, V226, N1, Jan 1980, P4 Reports briefly on remedial measures being taken to combat flooding of the Wistow No.l shaft at Selby coal mine. Back grouting of the in situ concrete lining is carried out followlmg stepwise pumping to reduce the water level.

804093 SHORTEST CONNECTION BEIWEEN TWO ROADWAYS. AN iTERATIVE SOLUTION Hellewell, E G Colliery Girard, V227, NI2, Dec 1979, I~61662

80409~ coAL H L U R S Jacksonj J B Colliery Guard, V227, Nil, Nov 1979, P596-604 Reviews the factors to be considered in coal mining with respect to the size ~ siting of pillars when it is accepted that pillars are requdred, and finally ~ e s e n t s f a c t , s in favour of total extraction. 804095 ROCK MECHANICs/GEOTECHNICAL INVESTIGATIONS: THEIR APPLICATION IN THE MINING INDUSTRY. PART 4. CASE STUDIES IN THE SOUTH wALEs COALFIELD Knight, D Colliery Guard, ~-227, Nll, Nov 1979, P6~/~-

652 Describes three case studies related to: (i) the determination of rock movement around rosdways, (2) the effects of re-use of roadways on strata deformation, (3) roadway design to permit satlafactc~y re-use. Rock mechanics instrumentation is discussed, Irmluding borehole inellnometers and n~gnetlc rod extenaometer s. 804096 REC~NT ADVANCES IN W A T ~ JET COAL MINING Summers, D Colliery Guard, V127, N9, Sept 1979, P537-

541 Reviews developments in conventional hydraulic mining, borehole mining, and high pressure water Jet minimg. 804097 PRINCIPAL FEATURES OF ROADWAY DRIVAGE MACHINEs Clark, R A Min Technol, V61, N707, Sept 1979, P380-386 804098 DEVELOPMENTs IN ~ ROCK TUNNELLING Woodley, J N L Min Engr, V139, N217, Oct 1979, P321-325 Consid~s developments in driving through coal and rock arzl in cross-meastw~e drivages. Drilling equipment, rosdheading machines, hard rock tunnellimg machines~ and roadway support systems ere discussed.

8o4o99 SURVEYING THE MINING INDUSTRY AND MINING EQUIPMENT OF THE FEDERAL RE~JBLIC OF G ~ i N Y Min Mag, VI41, NS, Nov 1979, I%16-500 This issue contains a series of articles on ere mining, coal mining, shaft sinking, mining technology, and mining equipment in West Germa~.

804100 PLAN FC~ MINING NAHCOLITE IN THE PICEANCE BASIN, COLORADO RaJaram, V; Nielsen, I P; Raymond, H D Min Emgmg, VSl, N12, Dec 1979, P1699-1703 RelX~ts a room amd pillar mining scheme to extract mahcolite frc~ the region of oil shale reserves in Northern Colorado. Geotechn~cal considerations are discussed and rock strength parameters tabulated. 804101 SUB-LEVEL CAVING SIMULATION OF 3000 p~I~RRECOVERY O I ~ T I O N AT MOUNT ISA MINE, AUSTRALIA ChatterJee, P K; Just, G D; Ham, G I Trams Inst Min Metall (Sect A Min Ind), V88, Oct 1979, PAI47-AI55 Describes a model system based on operations at Mount Isa mine and gives the results of a fivemonth simulation which are compared with actual operations. The model incorporates a range of operating add machine requlre~ents with mime design parameters. 804102 IN-THE-HOLE DRILLING AT HEATH STEELE MINES LIMITED Ladner, E CIM Bull, V72, ~i0, Oct 1979, P59-65 DescriBes the use of large-dlsmeter bereholes in open blasthole stoping at a copper and leadzinc crebody in New Brunswick, Canada. 80~103 MINING METHODs AND ECON(IMICS FOR IMPROVED COAL EXTRACTION P A P a s PRESE~T~U AT THE WITBANK COAL COLLOQUIUM ON 3RD O C T O B ~ 1979 J S Afr Inst Min Metall, V80, NI, Jan 1980, P1-6 -

This issue contains six papers and a discussion coverimg aspects of coal mining in Sou~h Africa, including t/~e use of continuous miners, pillsr design, and open cast methods. 804104 EXTRACTION OF SEAMs IN PROTECTIVE PILLARs OF SHAFTS IN THE OSTRAVA-KARVINA BASIN (IN CZECH) Matusek, Z; Zene, M

Uhli, V27, Ng, Sept 1979, P397-402 804105 ~ Z ~ I ~ C E

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SUPPORT (IN CZECH) Sevcik, A Uhli, V27, h6, June 1979, P255-260 804106 P R O B I ~ 8 OF THE INFLUENCE OF MINING ON CROSSCUTs IN THE OSTRAVA-KARVINA BASIN (IN CZECH) Zenc, M Uhli, V27, N6, June 1979, F261-265 Research on the extraction of the pillars protecting cross-cuts, and on the protection of cross-cuts from damage by other mine workings, is repo~ted. The influence of a face on a cross-cut, the prediction of convergence, meas~e~ents using long bolts, and the result of repeated effects of mining sre considered. 804107 C O M P S - A I D E D sELECTION OF MINING SYSTEM AND TYPE OF SUPPORT IN LONGWALL WORKINGs (IN POLISH) Sek, T; Snopkowski, R Meeh Automat Gorn, NT, July 1979, F27-31 804108 PROBLEM OF ROOF CONTROL IN SEAMS LIABLE TO ROCK AND GAS OUTBURSTS (IN POLISH) Suchodolskl, Z Przegl Gown, V35, NlO, Oct 1979, P406-413