domain. In January 2023 the deputy prime minister for industry and construction reported discovery of iron oxide deposits near Çagyl, Türkmenbaşy District, Balkan Province. Construction materials Four cement plants operate in Turkmenistan, and plans have been announced to construct three more. The four cement plants currently in operation, each designed to produce one million tons per year, are: Baherden Cement Plant (Ahal Province) Kelete Cement Plant (Ahal Province) Lebap Cement Plant (in Türkmenabat) Balkan Cement Plant (in Jebel) In 2019, President Berdimuhamedov noted that the Kelete plant was operating at 8.1%, the Lebap plant at 88%, the Baherden plant at 64%, and the Balkan plant at just over 40% of design capacity. In 2019, Turkmenistan produced 5.1 million standard square meters (4mm thickness) of sheet glass. A $375 million float glass and glass container plant built by Tepe Inşaat of Turkey was opened February 14, 2018, in Ovadandepe north of Ashgabat. It replaced a Soviet-era glass factory located in central Ashgabat. In 2019, the value of Turkmenistan's glass exports as reported by trading partners was US$9.5 million. A steel smelter, Türkmen Demir Önümleri Döwlet Kärhanasy () operating on scrap metal is located at kilometer 22 on the Ashgabat-Dashoguz Automobile Highway near Ovadandepe. It produces mainly rebar and channel iron. Chemicals As of 2019, Turkmenistan had "nine chemical plants that produce nitrogen and phosphorus fertilizers (700,000 tons per year), sulfuric and nitric acids, iodine, bromine, and mineral salts." In 2019, the country was the world's 3rd largest producer of iodine. Petrochemicals Three plants in Turkmenistan produce urea (carbamide), primarily intended for export, one each in Tejen, Mary,and Garabogaz. The $1.3 billion Garabogaz plant, built by Mitsubishi Heavy Industries and GAP İnşaat (a subsidiary of Çalık Holding), was inaugurated on September 18, 2018, with a design capacity of 1.16 million tonnes of urea per year. The US$650 million Mary ammonia and urea plant, commissioned on October 17, 2014, was built by Rönesans Holding, Kawasaki, and Sojitz with design capacity of 400 thousand tonnes of ammonia and 640 thousand tonnes of urea. The $240 million Tejen plant, inaugurated on March 18, 2005, has a design capacity of 350,000 tonnes of urea per year. Reportedly, none of these plants currently produces at full capacity, however. Between January and October 2019, the Garabogaz plant produced approximately 392,000 tonnes of urea, of which 261,000 tonnes was exported. Production of nitrogenous fertilizers in Turkmenistan totalled 550,500 tonnes