The families or workmates of 13 divers who have died over the past five years have been interviewed. Diving practices have been observed on boats from three villages. The divers' breathing air has been tested for the presence of carbon monoxide from four boats with gasoline driven compressors and eight boats with diesel driven compressors. A low cost method has been developed, tested and implemented to reduce the presence of carbon monoxide gas and other exhaust emissions in the breathing air. Locally made adaption of the compressor.
Air is drawn from two metres above the compressor and is less subject to contamination.
Twelve data sheets have been developed and translated into Thai language. Each data sheet has a simple rule for safe diving, explanations and means of implementation. One pilot has been organized for the chiefs of boats from Rawai Village. Four seminars have been held for health care workers. Health care workers from the provincial, district and village level have been trained in basic diving physiology, neurological assessment of injured divers, emergency oxygen administration, conducting interviews and job safety analysis, developing informational tools and developing educational interventions for the reduction of risk.