THE PAKISTAN DEVELOPMENT REVIEW
Choice of Techniques: A Case Study of the Cottonseed Oil-extraction Industry in Pakistan
This paper analyses the choice of techniques at the product level with a view to evaluating the claim made by Stewart  and others that “choice of technique is eliminated once choice of product is made”. We consider the extraction of edible oil from cottonseed as a case study. Use is made of engineering data, coupled with product and factor price data from Pakistan, to examine the possibilities of factor substitution at the micro level for a reasonably well-defined product. The product in this case is well defined, although there are some qualitative differences associated with different methods of extraction.