Gem Pit Mining.   Small baskets full of gem bearing "illam" being tossed up by a human chain from 
the depths of the mine.  This valuable "illam" will later be washed and have the gems extracted. 
The shaft itself is shored up with old, non producing, rubber tree logs.  The "sticks" you see 
protruding from the top are split rails of areca nut wood used to hold matting in place to prevent 
the erosion of the walls of the gem pit.  An archaic way of mining using no powered assistance but
one the is ingeniously devised taking full advantage of materials at hand.  Truly admirable.