Input Structures through Time: The Case of Coal Mining Industry

THE theory of input-output analysis suggests a method for explaining a wide range of economic transactions in terms of a basic matrix of coefficients describing the technological interdependence of industries. Linear homogeneous production functions are assumed and the technical restrictions governing input flows in each industry are described by a set of coefficients, 'α_ij, the quantity of the output of industry i technically required per unit of output of industry j.