List of Articles جبهه کار طولانی Open Access Article Abstract Page Full-Text 1 - Logical designing of yield pillar base on coal pillars yielding process Kazem Oraee Navid Hosseini Open Access Article Abstract Page Full-Text 2 - Investigation of immediate roof’s GSI variations effects on periodic roof weighting interval of underground coal mines By Numerical method اصغر Nourozi کاظم Ouroei مهرداد Javadi کامران Goshtasbi