Some notes on tin mining in Malaya during late 1951 

 -  1951 
 - 20p.  30cm 
<br/><br/> The main methods of mining are dredging, gravel pumping, hyraulicing (water under natural head), opencast (dry) and dulang washing (panning) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tin