41. The new Department established a very intensive campaign in community food preservation under the leadership of Walter Chenoweth. 42. Choose " food safety and preservation, " then " publications and resources, " and then " food preservation ." 43. From 1952 to 1955 he was Senior Principal Research Officer at the CSIRO Division of Food Preservation and Transport. 44. In the summer of 1913, Chenoweth set up a laboratory and so it began teaching and demonstrating food preservation . 45. Choose " food safety and preservation, " then " publications and resources, " and then " Food Preservation ." 46. It is one of the oldest food preservation methods, which probably arose after the development of cooking with fire. 47. Irradiation isn't new; it has been used for years in food preservation to kill bacteria, and for sterilizing surgical supplies. 48. The 12-week course covers food preparation, menu planning, costing out dishes, food preservation and hygiene, and choosing a wine list. 49. She grows produce with an eye to home canning and storing, and teaches classes in food preservation and backyard gardening. 50. Jack Griffin works for Dr . Cranley, assisting him in food preservation experiments alongside his friend Dr . Arthur Kemp.
