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About us

The joint stock company Ostroj a.s. is a leading manufacturer of mining machinery suitable for any deep mining conditions plus a range of other engineering products. With over 70 years of manufacturing experience, the company is able to provide turn-key solutions and a full range of coalface equipment for coalfaces, including longwall mining operations.

For OSTROJ a.s., quality is of the foremost importance. As part of our commitment to quality, the company is certified according to the following standards: ISO 9001, ISO 14001, ISO 3834-2, DIN 18800-7, EN 1090, VDA 6.1, OHSAS 18001. Thanks to our experienced development teams, we are able to comply with our customers’ individual requirements. Mining equipment made by OSTROJ is used all over the world.

 Company History

 1878: Establishment of the Eduard Tatzel company, an engineering and assembly shop and foundry.

 1948: Construction of a new plant in Těšínská Street is approved in January. The foundation stone-laying ceremony takes place on 28 August.

 1949: OSTROJ trade mark registered in January.

 1977: OSTROJ becomes a subsidiary of the Ostrava-Karviná Mining Corporation.

 1989: OSTROJ becomes a state-owned company.

 1992: The joint-stock company Ostroj Opava is founded on 1 May.

 1993 – 1994: The company is sold as part of the voucher privatisation scheme introduced by the Czech government.

 1999: The shareholder structure of the company becomes stabilised; a single shareholder acquires a majority share in the company.

 2005:  The company name is changed to OSTROJ a.s. as of 1 August. A new logo is launched.

 2009: Construction of two new plants for the Mining Machinery and Tool Shop is completed.

 2011: Thorough reconstruction of shop floors for the Engineering and Assembly Shop, Hydraulics Division and Forging and Hardening Shop completed.

2013: Modernization of the administration building.

2014: OSTROJ won award from the Governor of the Moravian-Silesian Region for Social Responsibility and the Exporter of the Year award.

2015: Construction of a new production hall Tool Division.

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