Masam, a project for clearing mines in Yemen affiliated to Riyadh-based King Salman Humanitarian Aid and Relief Center (KSrelief), has demined 1,401 mines, 28 antipersonnel mines, 259 anti-tanks, 1,107 unexploded ordnance and seven explosive devices. Since the beginning of the project, 159,805 landmines have been dismantled. The landmines were planted by Houthi militias, in Yemen. The project is a continuation of the efforts exerted by the Kingdom of Saudi Arabia, represented by KSrelief, to clear the Yemeni lands of landmines and unexploded ordnance, and to train Yemeni national cadres in demining the mines.