OREANDA-NEWS. December 20, 2007. The laboratory tests conducted by the Kemerovo Center for Expert Examination of Coal confirmed the quality of all grades of the coal concentrate to be produced at the Listvyazhnaya coal preparation plant.

The GOST (State Standard) standardizing system certified the following product samples: graded coal concentrate with the grain size of 13–50 mm, which is highly demanded in non-ferrous metallurgy for production of ferro-alloys, as well as coal concentrate with the grain size of 0–13 mm, coal concentrate with the grain size of 0–50 mm, and screenings with the grain size of 0–13 mm, which are used by the energy plants. Their characteristics were tested for compliance with the existing standards.

In accordance with the Russian legislation, certification of coal products is required to carry out trading operations, and is to be held once in three years.