Oil Shale
A Scientific-Technical Journal

2003, Vol. 20, No. 4

1.	Editor's Page. J. Kann	441-442
*
2.	I. Kamenev, R. Munter, L. Pikkov, L. Kekisheva. Wastewater treatment in oil shale chemical industry [Presented at Symposium on Oil Shale in Tallinn, Estonia, November 18-21, 2002]	443-458
3.	M. Enel. Distribution of heavy metals in plants and their habitats in the outcrop area of Dictyonema shale	459-476
4.	K. Erg. Sulphate balance of lakes and shallow groundwater in the Vasavere buried valley, Northeast Estonia [Presented at Symposium on Oil Shale in Tallinn, Estonia, November 18-21, 2002]	477-490
5.	A. Trikkel, R. Kuusik. Modeling of decomposition and sulphation of oil shale carbonates on the basis of natural limestone [Presented at Symposium on Oil Shale in Tallinn, Estonia, November 18-21, 2002]	491-500
6.	I. Klevtsov, H. Tallermo, T. Bojarinova, T. Lausmaa. High-temperature corrosion resistance of the austenitic steels in the presence of chlorine-containing on-tube deposits [Presented at Symposium on Oil Shale in Tallinn, Estonia, November 18-21, 2002]	501-510
7.	T. Kattel. Design of a new oil shale surface mine [Presented at Symposium on Oil Shale in Tallinn, Estonia, November 18-21, 2002]	511-514
8.	O. Nikitin. Mining block stability analysis for room-and-pillar mining with continuous miner in Estonian oil shale mines [Presented at Symposium on Oil Shale in Tallinn, Estonia, November 18-21, 2002]	515-528
	*in memoriam*
9.	Tiit Purre (1931-2003)	529
10.	Jevgeni Petukhov (1921-2003)	531
*
11.	Year contents 2003	533-535