Publication in "Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie" monthly
We kindly inform that in issue 11 (207) from year 2011 of WUG's monthly - "Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie" was published an article titled "Influence of function ambiguity of directional contacts on hoisting machine's drive operation", of which authors are CEO of ELPRO-7 Ltd. company – MSc Bronisław Biel and MSc Jerzy Jakubowski from OPA PW Inc. company)
(source: WUG Archive No.11 from year 2011 [PL])