CA478741A - Methodes d'exploitation de la houille et machines d'exploitation - Google Patents

Methodes d'exploitation de la houille et machines d'exploitation

Info

Publication number
CA478741A
CA478741A CA478741A CA478741DA CA478741A CA 478741 A CA478741 A CA 478741A CA 478741 A CA478741 A CA 478741A CA 478741D A CA478741D A CA 478741DA CA 478741 A CA478741 A CA 478741A
Authority
CA
Canada
Prior art keywords
coal
mining
methods
machines
mining machines
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
CA478741A
Other languages
English (en)
Inventor
Vogel Walter
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.)
Mavor and Coulson Ltd
Original Assignee
Mavor and Coulson Ltd
Publication date
Application granted granted Critical
Publication of CA478741A publication Critical patent/CA478741A/fr
Expired legal-status Critical Current

Links

CA478741A Methodes d'exploitation de la houille et machines d'exploitation Expired CA478741A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA478741T

Publications (1)

Publication Number Publication Date
CA478741A true CA478741A (fr) 1951-11-20

Family

ID=35618401

Family Applications (1)

Application Number Title Priority Date Filing Date
CA478741A Expired CA478741A (fr) Methodes d'exploitation de la houille et machines d'exploitation

Country Status (1)

Country Link
CA (1) CA478741A (fr)

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