Its first-ever conveyor, formally called the PPJZR-850, is the culmination of nine months of work and was officially released with a presentation at the JZR production facilities.

The new unit allows miners to collect the "transported winnings" from the armoured face conveyor and transport the material to another collecting machine, such as a belt conveyor.

The conveyor is set to be delivered to the KWK Borynia-Zofiówka-Jastrzębie mine's Borynia section.

"The PPJZR-850 scraper conveyor comprises [a] KUJZR-4z coal crusher, UPJZR-KP1200 pushing device and the PTJZR-SZL1 line turning station," JZR explained.

"All this equipment has been designed and manufactured entirely in Jastrzębskie Zakłady Remontowe, using top-quality materials with much higher durability than the existing materials used in mining."

JSW management board's technical vice president Tomasz Śledź added: "This is only the beginning of the process of unification of longwall systems we intend to carry out in all our mines."

The company said it is already working on unification of further coal haulage devices, including PSJZR armoured face conveyors, KSJZR longwall crushers, UPJZR-SNZ belt tail pieces and PTJZR belt conveyors.