sentences:  In 1902, the Chauk-Lonywa oil field was discovered near Chauk, which is presently a major source of income for the town.On January 2, 2014, Singapore's Interra Resources announced that its jointly controlled entity, Goldpetrol Joint Operating Company Inc., had commenced drilling development well CHK 1177 in the Chauk oil field in Myanmar.The 6.8 Mw Myanmar earthquake shook north-central Myanmar on August 24, 2016 with a maximum Mercalli intensity of VI ("Strong").