According to the Thai language manual Producing Charcoal and Wood Vinegar (การผลิตถ่านและน้ำ�ส้มควันไม้), the cost of one unit is 800 baht. Such kilns can reportedly be used up to three years (Wiraphong, 42).
According to the Thai language manual Producing Charcoal and Wood Vinegar (การผลิตถ่านและน้ำ�ส้มควันไม้), the cost ofone unit is 800 baht. Such kilns can reportedly be used up to three years (Wiraphong, 42).