PL99797B1 - CONTROL DEVICE OF THE RETURN OF THE MINE PASSING VENTILATION DAM - Google Patents

CONTROL DEVICE OF THE RETURN OF THE MINE PASSING VENTILATION DAM

Info

Publication number
PL99797B1
PL99797B1 PL19107676A PL19107676A PL99797B1 PL 99797 B1 PL99797 B1 PL 99797B1 PL 19107676 A PL19107676 A PL 19107676A PL 19107676 A PL19107676 A PL 19107676A PL 99797 B1 PL99797 B1 PL 99797B1
Authority
PL
Poland
Prior art keywords
return
control device
mine
passing ventilation
ventilation dam
Prior art date
Application number
PL19107676A
Other languages
Polish (pl)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to PL19107676A priority Critical patent/PL99797B1/en
Publication of PL99797B1 publication Critical patent/PL99797B1/en

Links

PL19107676A 1976-07-09 1976-07-09 CONTROL DEVICE OF THE RETURN OF THE MINE PASSING VENTILATION DAM PL99797B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19107676A PL99797B1 (en) 1976-07-09 1976-07-09 CONTROL DEVICE OF THE RETURN OF THE MINE PASSING VENTILATION DAM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL19107676A PL99797B1 (en) 1976-07-09 1976-07-09 CONTROL DEVICE OF THE RETURN OF THE MINE PASSING VENTILATION DAM

Publications (1)

Publication Number Publication Date
PL99797B1 true PL99797B1 (en) 1978-08-31

Family

ID=19977743

Family Applications (1)

Application Number Title Priority Date Filing Date
PL19107676A PL99797B1 (en) 1976-07-09 1976-07-09 CONTROL DEVICE OF THE RETURN OF THE MINE PASSING VENTILATION DAM

Country Status (1)

Country Link
PL (1) PL99797B1 (en)

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