CA860604A - Yieldable mine roof-support - Google Patents

Yieldable mine roof-support

Info

Publication number
CA860604A
CA860604A CA860604A CA860604DA CA860604A CA 860604 A CA860604 A CA 860604A CA 860604 A CA860604 A CA 860604A CA 860604D A CA860604D A CA 860604DA CA 860604 A CA860604 A CA 860604A
Authority
CA
Canada
Prior art keywords
support
mine roof
yieldable mine
yieldable
roof
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
CA860604A
Inventor
B. Clarke Edward
D. Sampson John
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
Publication date
Application granted granted Critical
Publication of CA860604A publication Critical patent/CA860604A/en
Expired legal-status Critical Current

Links

CA860604A Yieldable mine roof-support Expired CA860604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA860604T

Publications (1)

Publication Number Publication Date
CA860604A true CA860604A (en) 1971-01-12

Family

ID=36346033

Family Applications (1)

Application Number Title Priority Date Filing Date
CA860604A Expired CA860604A (en) Yieldable mine roof-support

Country Status (1)

Country Link
CA (1) CA860604A (en)

Similar Documents

Publication Publication Date Title
CA953318A (en) Auger arrangement
CA970146A (en) Drilling
AU3860672A (en) Substituted-p-menthanes
CA969910A (en) Rock crusher
CA960707A (en) Mining method
AU3878472A (en) Furyland furfuryl-benzomorphanes
GB1385197A (en) Tunnels
CA983998A (en) Battery-carrying arrangement
AU3256971A (en) Medicament-container
AU465344B2 (en) Threshold elements for detonators
CA860604A (en) Yieldable mine roof-support
AU4002472A (en) QUINOXALINE-din-OXIDES
CA942186A (en) Solution mining method
AU457353B2 (en) Drill
CA872114A (en) Mining combine
CA888589A (en) Mining collector
AU3750371A (en) Cikir bibd syrveukkabce ststem
AU2792771A (en) Paddleboat
AU4205472A (en) N-aryl-ureas
AU3244971A (en) Clipshade
CA872112A (en) Mining machine
AU473662B1 (en) Mine roof pins
CA886869A (en) Mine cars
CA879492A (en) Pocket soap-dispenser
CA969911A (en) Rock crusher