From: entekhab.ir
Subject: استاندار سمنان: خطای فردی و اشتباه محاسباتی علت اولیه وقوع حادثه و جانباختن هفت نفر در تونل معدن دامغان گزارش شد
Date: Thu, 30 Apr 2026 13:34:50 +0330
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