Workers in the oil, natural gas, and petrochemical industries held their nationwide strikes for the 16th consecutive day on Sunday in 23 cities and 12 provinces. These cities were: Mashhad, Tabriz, Abadan, Ahvaz, Mahshahr, Isfahan, Ardabil, Khorramshahr, Urmia, Heris, Mehran, Ilam, Bandar-e Kangan,