operation of which has been mastered and, therefore. not Included In the plan for the development of science and engineering); -modernization of equipment, structures and transport means Including that done In the course of overhaul: 351 -utilization of means of "smal I mechanization": various accessories, attachments, more· perfect tools. starting and adjusting devices, etc.J -partial Improvement of the employed technology and production methods, Including the Introduction of rationalization proposals and foremost experience at Individual stages of the produ-ct 1 on process and operatIons. Calculations by the factor "Improvement of uti I lzatlon and application of new types of raw materials and materials" consider the economy forming as a result of accomplishing measures for more rational utilization of raw materials and material resources, which Is not Jndlvated In the calculation by the factors stated earlier, Including: -Improvement of utilizing natural raw materials, In particular, by reducing Its losses at extraction, enrichment and primary processing, as wei I as most complete extraction of useful components when utilizing complex raw materials; -Improvement of utilizing raw materials In the production process (Improvement of cutting out, decrease of allowances for processing, Introduction of new recipes>; -utilization of substitutes, more economic profiles of rolled metal, more efficient grades of cement, etc. -more comp I et.e waste In production, secondary heat, etc. utilization of raw material recovery of used materials, and material utilization of Data on the reduction of norms of consumption -of material resources and the plan of measures for their economy are the Initial ones for calculattons by this factor <as by other factors associated with the uti I lzatlon of raw materials and materials). The effectiveness of measures for Improving the products and directed toward reducing their material and labour consumption. for example, the utilization of advanced constructl~n materials, reduction of the mass of the machines and equipment owing to 
**Analysis**
The text appears to be discussing measures to improve the efficiency and productivity of various industries, particularly in the context of science and technology. It mentions modernization of equipment, utilization of new technologies, and optimization of raw materials and materials. This suggests that the text is focused on industrial development and technological advancements.

**Category**
Industry, Science and technology