31. Measurement of airborne noise emitted by machines ; enveloping surface method ; woodworking machines ; panel sizing machines 32. Measurement of airborne noise emitted by machines ; enveloping surface method , oxy - fuel gas and plasma torches and machines 33. Measurement of airborne noise emitted by machines ; enveloping surface method ; form for measurement report , comminuting machines 34. Measurement of airborne noise emitted by machines ; enveloping surface method ; metal working machines , gear hobbing machines 35. Measurement of airborne noise emitted by machines ; enveloping surface method ; mine diesel locomotives and mine road railers 36. Noise measurement on machines ; airborne noise measurement , enveloping surface method , air - cooled heat exchangers air coolers 37. Measurement of airborne noise emitted by machines ; enveloping surface method ; machinery for the processing of plastic and rubber 38. Measurement of airborne noise emitted by machines ; enveloping surface method ; woodworking machines ; table band sawing machines 39. Measurement of airborne noise emitted by machines ; enveloping surface method ; woodworking machines ; double end tenoning machines 40. Measurement of airborne noise emitted by machines ; enveloping surface method , woodworking machines , one side moulding machines
