Rice field workers
The lady far to the left is shaking the whole kernels in a flat bowl, releasing the husks/shells into the wind. The ladies to her right are collected the husked rice, and pouring it into the bags. The lady on the far right takes the filled bags, on her head, to the big stack of bags. I watched them work while I ate my lunch, and felt a little guilty as I sipped my ice-water in the heat.