Vettiver processing

One of the followers of my blog mentioned about planting vettiver along the sides of the road, channels in my farm to reduce soil erosion and conserve water.
While I am waiting for the next spell of rain, I would like to know if there are any companies processing vettiver for oil. It would be nice to get some economic benefit while they conserve the soil.
I know there are 1-2 aromatic plant processors in Dindigul area but just cant remember their names.