Mineralproduksjon 7 (2016) B25-B32 ISSN 1893-1170 (online utgave) ISSN 1893-1057 (trykt utgave) www.mineralproduksjon.no Note Increased geometallurgical performance in industrial mineral operations through multivariate analysis of MWD-data Veena Sajith Vezhapparambu 1* 1 Dept. of Geoscience and Petroleum, Faculty of Engineering, NTNU – Norwegian Univ. of Science and Technology, Trondheim * Corresponding author: veena.vezhapparambu@ntnu.no The project discussed here is taking advantage of MWD data analysis to contribute to safety, cost reduction and increased resource utilization along the mining value chain. Using the results from MWD analysis a new and improved geometallurgical model will be developed. 1. INTRODUCTION This research is a part of a project named Increased Recovery in the Norwegian Mining Industry by Implementing the Geometallurgical Concept (InRec). The objectives of the project are threefold. Firstly, the project aims at developing the concept of geometallurgical flow sheets, its definition and its use. Secondly, the project will look at how in-situ raw material properties influence the performance of magnetic separation process in a Norwegian industrial mineral operation. Thirdly, and the focus of this part of the research is based on the MWD data collected during open pit mining at the Brønnøy Kalk AS mine. Brønnøy Kalk AS is situated near Brønnøysund in North-Norway and produce calcite marble raw material for production of ground calcium carbonate (GCC). 2. GEOMETALLURGY AND MEASUREMENT WHILE DRILLING (MWD) DATA A drilling rig is used to drill boreholes in the ground in construction, quarrying, and open-pit mining. Measurement While Drilling (MWD) is a technique for collecting