1. Borehole measurement of the velocities of elastic waves in rocks

   • V. V. Zhadin

   Rock Mechanics and Rock Pressure Pages: 103 - 109

2. A medium under tension and weakened by three circular holes

   • N. M. Kryukova

   Rock Mechanics and Rock Pressure Pages: 110 - 119

3. An in-situ study of the spontaneous movement of water in a coal seam

   • O. I. Chernov
   • V. A. Vologodskii
   • N. P. Mironov

   Rock Mechanics and Rock Pressure Pages: 120 - 123

4. Results of gas-permeability research in the Volkovskii seam at the “Severnaya” colliery in the Kemerovo field of the Kuzbass

   • A. T. Gorbachev
   • I. V. Sotnikov
   • I. V. Fomin

   Rock Mechanics and Rock Pressure Pages: 124 - 128

5. Forecasting movements of strata in the abutment zone in thick steep seams

   • A. G. Shadrin

   Rock Mechanics and Rock Pressure Pages: 129 - 133

6. Stress measurement by pressure difference in thick steep seams in the Kuzbass

   • V. K. Aksenov
   • M. V. Kurlenya
   • A. M. Palii

   Rock Mechanics and Rock Pressure Pages: 134 - 135

7. Calculating the support reaction in relation to the orientation of fissuring and direction of advance

   • É. F. Mel'nikov

   Rock Mechanics and Rock Pressure Pages: 136 - 142

8. Resistance of a loose medium to motion of a horizontal rigid plate

   • P. M. Alabuzhev
   • P. G. Balyshkin
   • A. D. Kostylev

   Rock Mechanics and Rock Pressure Pages: 143 - 147

9. Drilling blast holes without a compressor by means of aerated solutions

   • M. V. Vasil'ev
   • G. G. Fedorova
   • G. T. Neumyvakin

   Rock Breaking Pages: 148 - 151

10. Secondary fragmentation of Antonovsk quartzites by air-flame-jet burners

    • I. A. Fedin
    • V. M. Popov

    Rock Breaking Pages: 152 - 155

11. Method and results of an experiment to measure the mechanical drilling speed and durability of the 6L-145-Ok bit in relation to drilling conditions and rock hardness

    • G. I. Rakhleev

    Mechanization and Automation in Mining Pages: 156 - 162

12. Electro-pneumatic powered sectional vibratory conveyer

    • P. A. Korlyakov
    • N. N. Shubin
    • M. I. Torsunova

    Mechanization and Automation in Mining Pages: 163 - 164

13. Signs of rotating aerodynamic breakaway in axial pit ventilator fans

    • A. A. Dzidziguri
    • T. I. Matikashvili

    Brief Communications Pages: 165 - 168

14. Extraction of iron from oxidized ores by leaching

    • N. A. Chinakal
    • F. A. Baryshnikov
    • I. L. Ruzinova

    Brief Communications Pages: 169 - 172

15. Determination of the iron content in a mixture of magnetite and silica from the magnetic permeability

    • L. S. Kuzyaev
    • Yu. I. Protasov

    Brief Communications Pages: 173 - 174

16. Computer study of vibro-transportation of bulk loads

    • I. F. Goncharevich
    • É. G. Saratovskii

    Brief Communications Pages: 175 - 179

17. Field work on rock pressures developed when railway tunnels are driven in fissured rock

    • B. E. Slavin
    • V. P. Kazakov

    Brief Communications Pages: 180 - 183

18. Energy criterion for the stability of a mine working

    • G. A. Mataev
    • T. B. Malachikhanov
    • N. B. Malachikhanov

    Brief Communications Pages: 184 - 185

19. Specific surface energy: A new index of rock crushability and its application to blasting calculations

    • Yu. M. Michik
    • K. A. Dolgov

    Brief Communications Pages: 186 - 188

20. Measuring the striker velocity in investigations of dynamic loading

    • Yu. V. Martsishevskii
    • A. M. Kovalev
    • B. N. Serpeninov

    Brief Communications Pages: 189 - 190

21. Performance metering device (PMD) for conveyers with varying angle of inclination

    • Ya. S. Kravchenko
    • M. B. Berenboim
    • T. S. Kravchuk

    Brief Communications Pages: 191 - 195

22. Remote control of the humidity of air in a mine

    • E. S. Krichevskii
    • A-R. V. Urbonavichute

    Brief Communications Pages: 196 - 198

23. Quantitative reliability criteria for electromechanical systems in mines

    • L. Ya. Gimel'shein
    • B. S. Nikeshin

    Brief Communications Pages: 199 - 202

24. Calculating the primary parameters of a loop antenna for a self-oscillating transducer

    • É. I. Arsh
    • V. A. Belash
    • L. A. Krasin

    Brief Communications Pages: 203 - 208

25. Determining the stresses in a pillar by the unloading method

    • F. P. Bublik
    • G. A. Ivanov

    Brief Communications Pages: 209 - 210

26. New method for borehole drilling

    • B. V. Sudnishnikov
    • A. D. Kostylev
    • L. M. Lipovetskii

    Brief Communications Pages: 211 - 211

27. A rational approach to the properties of rock-forming minerals

    • I. L. Éttinger

    Bibliography Pages: 212 - 213

28. The science of science: An introduction to the general methodology of science

    • G. M. Dobrov
    • P. T. Prikhod'ko

    Bibliography Pages: 214 - 215

29. Rock pressure phenomena in the main workings of deep pits in the donets coalfield

    • Yu. Z. Zaslavskii
    • G. E. Posokhov
    • V. N. Tsytsarkin

    Bibliography Pages: 216 - 216