The Ukhta-Pechora (“ookh-ta peh-CHOR-uh”) prison camp housed forced workers in this industry. The Empress Alexandra school for Muslim girls was founded with fortunes made from this industry by Zeynalabdin Taghiyev (“zay-NAHL-ahb-DEEN tah-GEE-yiv”) in Bibi-Heybat. This industry was central to the towns of Câmpina (10[1])and Ploeşti (10[1])(“ploy-ESHT”). The brothers Robert and Ludwig Nobel names a company in this non-liquor industry that built the Zoroaster to transport its main product. This industry was targeted by Operation Edelweiss, whose effectiveness soon (10[1])diminished after Case Blue was halted with the defeat at Stalingrad. Caviar diplomacy (10[1])pursued by Ilham Aliyev (“eel-HAHM ah-LEE-yiv”) relied on wealth from this industry, whose major center is Baku. For 10 points, name this natural resource industry of the Caucasus once heavily invested in by companies like Royal Dutch Shell. ■END■