The first investigations of the coal formation on the is land of pulau Laut Were carried out by mining-engineer C.DE GROOT, on account of a report published in 1850 by the architect of the engineers corps W. IHNE. Since he only visited the coal occurrences on the northern part of the island, D.E.GROOT was of the opinion that coal deposits occur only…
The first investigation of the coal formation on the island of pulau laut were carried out by mining-engineer C.DE GROOT, on sccount of a report published in 1850 by the architect of the engineers corps W. IHNE. Since he only visited the coal occurrences on the northern part of the island, D.E.GROOT was of the opinion that coal deposits occur only i…