The coal deposits of Batan island, with notes on the general and economic geology of the adjacent region by Smith, Warren DuPre 1880-

The coal measures of the Philippines. A rapid history of the discovery of coal in the Archipelago and subsequent developments, with the full text of the record of the McLeod coal c...

The coal measures of the Philippines. A rapid history of the discovery of coal in the Archipelago and subsequent developments, with the full text of the record of the McLeod coal c...

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Coal age.

Colliery engineer.

San Miguel to explore more coal mines using latest tech. by Gatdula, Donnabelle L.

Social costs of coal mining a case study by Tayag, Jean C.

Natural gas and the environment so much nicer than coal.

A program of Research, Development and Demonstration for Enhancing Coal Utilization to meet National Energy needs.

Coal age.