BE511825A - - Google Patents

Info

Publication number
BE511825A
BE511825A BE511825DA BE511825A BE 511825 A BE511825 A BE 511825A BE 511825D A BE511825D A BE 511825DA BE 511825 A BE511825 A BE 511825A
Authority
BE
Belgium
Application number
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.)
Publication of BE511825A publication Critical patent/BE511825A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
BE511825D 1952-05-31 BE511825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE726000X 1952-05-31

Publications (1)

Publication Number Publication Date
BE511825A true BE511825A (en)

Family

ID=3879009

Family Applications (1)

Application Number Title Priority Date Filing Date
BE511825D BE511825A (en) 1952-05-31

Country Status (5)

Country Link
BE (1) BE511825A (en)
DE (1) DE1018824B (en)
FR (1) FR1074334A (en)
GB (1) GB726000A (en)
LU (1) LU32099A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959924A (en) * 1954-01-29 1960-11-15 Groetschel Karl Maria Connection for lagging irons

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE499766A (en) * 1948-07-08
US3043108A (en) * 1958-07-16 1962-07-10 Vanwersch Aloys Mine roof bar arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR993340A (en) * 1951-04-23 1951-11-12 Bochumer Eisen Heintzmann Support system for mining operations by size
NL86396C (en) * 1950-03-04
AT174363B (en) * 1951-04-23 1953-03-25 Bochumer Eisen Heintzmann Cap connection in longwall construction in steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959924A (en) * 1954-01-29 1960-11-15 Groetschel Karl Maria Connection for lagging irons

Also Published As

Publication number Publication date
LU32099A1 (en)
FR1074334A (en) 1954-10-05
DE1018824B (en) 1957-11-07
GB726000A (en) 1955-03-16

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