FR968020A - Improvements to retaining elements for mining - Google Patents

Improvements to retaining elements for mining

Info

Publication number
FR968020A
FR968020A FR968020DA FR968020A FR 968020 A FR968020 A FR 968020A FR 968020D A FR968020D A FR 968020DA FR 968020 A FR968020 A FR 968020A
Authority
FR
France
Prior art keywords
mining
retaining elements
retaining
elements
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
& Rech S Ind & Scient E R I S
Original Assignee
& Rech S Ind & Scient E R I S
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 by & Rech S Ind & Scient E R I S filed Critical & Rech S Ind & Scient E R I S
Application granted granted Critical
Publication of FR968020A publication Critical patent/FR968020A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58—Devices for setting props or chocks
FR968020D 1948-06-17 1948-06-17 Improvements to retaining elements for mining Expired FR968020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR968020T 1948-06-17

Publications (1)

Publication Number Publication Date
FR968020A true FR968020A (en) 1950-11-17

Family

ID=9501056

Family Applications (1)

Application Number Title Priority Date Filing Date
FR968020D Expired FR968020A (en) 1948-06-17 1948-06-17 Improvements to retaining elements for mining

Country Status (1)

Country Link
FR (1) FR968020A (en)

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