Poland, Nov. 13 -- Poland based OPA EKSPERT Sp. z o.o. has secured contract from Polska Grupa Gornicza S.A. for Services of industrial workers - Providing services in the field of maintaining electrical operation of mining shaft hoists and in ZPMW and on the surface in Polska Grupa Gornicza SA Branch of KWK Sosnica. The value of the contract is worth 534501.96 PLN.

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