References

Brechtel, C.E., J. Baz-Dresch and J.S. Knowlson, 1989. Application of high-strength backfill at the cannon mine. Proceedings of the 4th International Symposium on Mining with Backfill, October 2-5, 1989, Balkema, Rotterdam, Netherlands, pp: 105-117.

Ermakova, E., J. Solca, H. Huber and M. Welker, 1995. Argon in condensed phase: Quantitative calculations of structural, thermodynamic and transport properties from pure theory. J. Chem. Phys., 102: 4942-4951.
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Farmer, I.W. and A.R. Jumikis, 1969. Engineering properties of rocks. Soil Sci., 107: 311-311.
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Pushkarev, L.I., B.P. Drobot and J.A. Bich, 1986. Use of room and pillar system in conditions of NUBM. Min. J., 5: 35-38.

Shestakov, V.А., 1990. Rational Use of Subsurface. Nedra Publishers, Moscow, Russia,.