AU220528B2 - Mechanical extraction of coal - Google Patents

Mechanical extraction of coal

Info

Publication number
AU220528B2
AU220528B2 AU28988/57A AU2898857A AU220528B2 AU 220528 B2 AU220528 B2 AU 220528B2 AU 28988/57 A AU28988/57 A AU 28988/57A AU 2898857 A AU2898857 A AU 2898857A AU 220528 B2 AU220528 B2 AU 220528B2
Authority
AU
Australia
Prior art keywords
coal
mechanical extraction
extraction
mechanical
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
AU28988/57A
Other versions
AU2898857A (en
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of AU220528B2 publication Critical patent/AU220528B2/en
Publication of AU2898857A publication Critical patent/AU2898857A/en
Expired legal-status Critical Current

Links

AU28988/57A 1957-06-26 Mechanical extraction of coal Expired AU220528B2 (en)

Publications (2)

Publication Number Publication Date
AU220528B2 true AU220528B2 (en) 1959-01-08
AU2898857A AU2898857A (en) 1959-01-08

Family

ID=

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