IM 2020 June 20 | Page 25

UNDERGROUND RAIL for mines mainly for the Eastern Bloc market until the early 1990s. When communism fell, the company lost orders and in the mid-1990s went bankrupt and was ready for sale. In 2004, four business partners bought the company and renamed it “PHS Strojárne.” It succeeded in reviving the production of both mining locomotives as well as some machinery components for companies in Germany and France. Then in 2010, another set of partners broke off again to establish a new company BJS Slovakia that started focusing on the planning and manufacture of mining and surface narrow-gauge locomotives exclusively. PHS Strojárne then gradually went bankrupt. If that wasn’t complex enough, yet another company “Locoproject” was founded in 2017 by another former employee and member of the company management at BJS Slovakia which has successfully produced some units. Pavel Jedlička, Director of BJS Slovakia told IM: “We compete in tenders worldwide, but our core markets are mainly in Central and Eastern Europe. The most in demand locos from our company BJS are trolley locos, and then diesel and battery powered. The BJS company has currently accomplished the development of a trolley-battery powered locomotive where the battery is charged from the trolley and at spots without trolley the locomotive can fully run on battery power. And for battery powered locomotives, besides lead batteries, we have now introduced Liion batteries having several significative advantages to the lead batteries. We do not offer automated solutions, but we collaborate with companies specialising in the automation of mines and we prepare the locomotive based on their requirements.” A large number of BJS locos are working in the Polish copper mines of KGHM. They include trolley, diesel as well as battery powered locomotives. After that the biggest set of locos is working at the Apatity phosphate mines of Phosagro in Russia as well as at some other mines in Russia and Ukraine. BJS has also delivered units to Turkey, Bosna & Hercegovina, Serbia and some other countries. On the question of how the mining and tunnelling loco markets differ, Jedlička states: “In contrast to mining locomotives, tunnelling locomotives do not need to be designed for a small turning radius. That’s why they may have a bigger wheelbase and, therefore, may be longer and of a more robust design. Also, from a safety point of view, they don’t need as many safety systems so are a lot simpler in design that those for the mining market. There is also a disadvantage for the tunnelling locos in that the tunnel developing companies only need the locos The ET 14, an example of a trolley loco for mining supplied by BJS in the Slovak Republic for a limited stage of construction and for this reason, they lease them than buy. So, if the leasing period is short, it means a low return for the loco manufacturer.” Norilsk rolls out Ferrit solution across Polar Division In October 2019, Russia’s Nornickel said it had completed pilot testing of an electric-trolley locomotive at Komsomolsky mine of Nornickel’s Polar Division. The new engine is made by Czech manufacturer Ferrit and enables loading/ unloading without the presence of a manned operator. Equipped with the most modern control system, the machine can be operated in a fully