Method used for measuring air speed in the excavation of the mine to monitor and control the state of ventilation

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Bibliographische Detailangaben
Hauptverfasser:	WASILEWSKI STANISŁAW, DZIURZYŃSKI WACŁAW, KRACH ANDRZEJ
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS EARTH DRILLING FIXED CONSTRUCTIONS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MINING PHYSICS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS TARIFF METERING APPARATUS TESTING
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