The world tungsten economy : An econometric model

This paper presents a predictive model for the world tungsten economy, disregarding short-term speculative activity. The study provides a framework for exploring investment and optimal pricing policies and stabilizing mechanisms. The author discusses the rationale for the formulation of the structural equations, and presents estimates of a simultaneous equation model purporting to explain the structure of the tungsten ore economy. Both ex post and ex ante simulations testify to the model's predictive ability.