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| कोयला: carbon coal collier brown coal lignite fuel |
| कोयला खान: coal mines colliery |
| खान: mine repertory working workings khan pit coal pit |
| श्रम: ado exercise toil effort labor Labour exertion |
| श्रम कल्याण: labour welfare welfare of labour श्रम ado |
| श्रम कल्याण निधि: labour welfare fund |
| कल्याण: benediction felicity interest good well cause |
| कल्याण निधि: welfare fund |
| निधि: fund funds prize treasure Treasury treasure house |
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मोबाइल