Контекст следующий
Based upon detailed investigations, the choice was made for the Gleithobel plow system 9-38 ve with the plow body 5.7, which had just been developed and successfully tested underground. This system is used in seams from 0,9 m and has a face side plow guide. Base plate plow systems with a gob side chain were only used at Niederberg Mine anymore due to the low seam height there of only 0,7 - 0,8 m. Due to reasons similar to those listed above the ReiЯhakenhobel plow was chosen as the remaining standard