GB1251953A - - Google Patents

Info

Publication number
GB1251953A
GB1251953A GB1251953DA GB1251953A GB 1251953 A GB1251953 A GB 1251953A GB 1251953D A GB1251953D A GB 1251953DA GB 1251953 A GB1251953 A GB 1251953A
Authority
GB
United Kingdom
Prior art keywords
ripping
seam
deck
skids
jacks
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
English (en)
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
Publication of GB1251953A publication Critical patent/GB1251953A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
GB1251953D 1967-12-12 1967-12-12 Expired GB1251953A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5635967 1967-12-12

Publications (1)

Publication Number Publication Date
GB1251953A true GB1251953A (https=) 1971-11-03

Family

ID=10476423

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1251953D Expired GB1251953A (https=) 1967-12-12 1967-12-12

Country Status (2)

Country Link
FR (1) FR1594374A (https=)
GB (1) GB1251953A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111119960A (zh) * 2020-01-13 2020-05-08 安徽理工大学 一种适用于综掘工作面复杂工况的锚固机器人

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111119960A (zh) * 2020-01-13 2020-05-08 安徽理工大学 一种适用于综掘工作面复杂工况的锚固机器人

Also Published As

Publication number Publication date
FR1594374A (https=) 1970-06-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees