Kopalnia Węgla Kamiennego 1 Maja) was a large mine in the south of Poland in Wodzisław Śląski, Silesian Voivodeship, 260 km south-west of the capital, Warsaw.

Since 1961 it was called 1 Maja (1 May), in honor of International Workers' Day.

It was one of the most modern and best coal mines in the Polish People's Republic.

[1][2][3] Coal Mine 1 May was the general sponsor of the Polish football team Odra Wodzisław Śląski until the Mine's closure.

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