refilling of shafts (Q1262844)
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maintenance-free and effective closure of a disused shaft
- shaft sealing
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | refilling of shafts |
maintenance-free and effective closure of a disused shaft |
|
Statements
Identifiers
Sitelinks
Wikipedia(1 entry)
- dewiki Schachtverwahrung