mining in steeply inclined coal seams using fuzzy analytical hierarchy method (Case study: Hamkar coal mine, Iran) A. Hosseini1, M. Najafi2*, S.A. Shojaatlhosseini3 and R. Rafiee4 1. University of Applied Science Technology, Kerman, Iran 2. Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Iran 3.Web