A criterion of rock strength, base on limiting-stress surface constructed from experimental data R. M. ÉigelesYu. Ya. Éstrin Rock Mechanics and Rock Pressure Pages: 581 - 589
Degassing of coal seams A. T. GorbachevS. V. Kuznetsov Rock Mechanics and Rock Pressure Pages: 590 - 601
Statistical analysis of ring supports with mixed boundary conditions at the periphery K. V. RuppeneitV. A. LytkinA. N. Dranovskii Rock Mechanics and Rock Pressure Pages: 602 - 606
Determination of stresses in rocks from known displacements over the seam and in the waste area B. V. VlasenkoG. I. Gritsko Rock Mechanics and Rock Pressure Pages: 607 - 615
An investigation of the reflection and refraction of elastic waves by an isolated fracture K. D. Klem-Musatov Rock Mechanics and Rock Pressure Pages: 616 - 625
Determination of rock strength by ultrasonic pulses V. S. Yamshchikov Rock Mechanics and Rock Pressure Pages: 626 - 630
Determining the surface area of an ore or rock fragment from its projections É. I. Markenzon Rock Fracturing Pages: 636 - 640
Theory of the action of clusters of closely spaced blastholes A. V. Bud'koV. M. Zakalinskii Rock Fracturing Pages: 641 - 647
Continuous methods of working high blasted benches Yu. I. BelyakovV. S. Sychev Open-cut Mines Pages: 648 - 652
Working thin dipping or steeply dipping seams in open-cut mines of the Central Kuzbass V. D. GamovP. N. Moshkin Open-cut Mines Pages: 653 - 658
Methods of calculating the optimal cross sections of mine roadways and other workings A. M. Kurnosov Underground Mining Pages: 665 - 672
A summary of practical experience with powered supports and equipment in level seams in the Kuznetsk coalfield A. K. KovrizhinV. V. AngarskiiN. N. Dmitrienko Underground Mining Pages: 673 - 680
Determining the resistive force exerted by the rock against the shovel of a loading machine G. V. RodionovV. F. Sytnik Mechanization and Automation Pages: 681 - 686
Use of statistical analysis to study automatic excavation V. D. ChizhikovV. G. GolovkoV. M. Sboev Mechanization and Automation Pages: 687 - 691
Rock stresses caused by the firing of a single charge with rectangular cross section Sh. G. VolodarskayaS. F. ChernovE. M. Zhukov Brief Communications Pages: 692 - 694
Electrical properties of frozen rocks A. M. VarshavskiiA. V. VlasovL. P. Avramenko Brief Communications Pages: 695 - 697
Preliminary calculations on roof displacement in steep seams in the Kuzbass A. F. Shadrin Brief Communications Pages: 698 - 701
Some aspects of visco-elastic collisions between solid bodies P. M. AlabuzhevYu. V. Sidorenko Brief Communications Pages: 702 - 705
Plenary Session of the Central Commission for Problems of Rock Pressure A. Orlov Chronicles Pages: 708 - 709
Seminar of Scientific Council for Physico-technical Problems of Mineral Extraction M. M. Protod'yakonov Chronicles Pages: 710 - 710