NOVELTY - A technical gas-production plant comprises gasification unit(s) with first reactor(s) into which a first sub-group of waste materials is introduced for gasification by comburent mechanism, and second reactor(s) in series and connected to the first reactor and into which a second sub-group of waste materials is introduced. An introduction device introduces the gases produced by the first reactor into the second reactor.    USE - For producing technical gases, e.g. hydrogen and carbon dioxide, from solid refuse, packaging, contaminated and other waste materials (claimed). It can be used for processing dangerous waste and wastewater to produce liquid/gaseous hydrogen useful e.g. in feed fuel cells, for producing electrical energy, in fuel cell for traction, as fuel for internal combustion engine for traction, and as fuel for gas turbine.    ADVANTAGE - The novel plant allows recovery of technical gases from solid refuse with minimal environmental impact and limited costs. Maximum energy content of the refuse can be recovered without solid, liquid, or gaseous emissions.    DETAILED DESCRIPTION - A technical gas-production plant comprises a preparation and separation unit(s), for preparing and separating waste materials into first and/or second sub-groups according to predetermined parameters, and gasification unit(s) downstream of the preparation and separation unit and provided with first reactor(s) (50) into which the first sub-group of materials is introduced for gasification by comburent mechanism. The gasification unit has second reactor(s) (51) in series and connected to the first reactor and into which the second sub-group of materials is introduced. An introduction device introduces the gases produced by the first reactor into the second reactor.    DESCRIPTION OF DRAWING(S) - The figure shows the above refuse gasification unit.    Reactors (50-52)    Screw (59)    Gasification towers (501, 511, 521)    Introduction pipe (502, 512, 522)    Tanks (506, 516, 526)    Plasma torches (507)    Chambers (513, 523)    Connection pipes (514, 524)    Injectors (515, 525)    Oxyhydrogen torches (517, 527)