TY  - BOOK
AU  - Nelson Kloni
TI  - Quarry site investigation at Bt Balai Nyabong, Mile 14 1/2 Lubok Antu Road
PY  - 1980///
KW  - Quarries and quarrying
KW  - Sarawak
N2  - The chert is weathered on the surface. The weathered rock appears brownish or dark grey due to iron oxide staining. The fresh rock is grey to purplish and hard
ER  -