21 June (Swaziland ) within release Development of natural resources goes into circulation Stamp Mpaka coal mines face value 3½ Swazi cent
Stamp Mpaka coal mines in catalogues | |
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Michel: | Mi:SZ 199 |
Stamp Number: | Sn:SZ 199 |
Stamp is square format.
Also in the issue Development of natural resources:
Stamp Mpaka coal mines it reflects the thematic directions:
A miner is a person who extracts ore, coal, chalk, clay, or other minerals from the earth through mining. There are two senses in which the term is used. In its narrowest sense, a miner is someone who works at the rock face; cutting, blasting, or otherwise working and removing the rock. In a broader sense, a "miner" is anyone working within a mine, not just a worker at the rock face