Oil company Royal Dutch Shell Plc said June 9 it had resumed activities at its Bajada de Añelo Block in Argentina’s Vaca Muerta area after seismic activity in the region led to a halt late last week.

“Shell Argentina resumed its activities on Pad 22 of the Bajada de Añelo block, after determining that the conditions for a safe and sustainable return to work were guaranteed,” the company said in a statement.

The oil firm said June 6 it had suspended activities after seismic movements in an area of Argentina’s Neuquén province near the Andes mountains bordering on Chile.

Shell operates other areas in Vaca Muerta, a huge region of unconventional hydrocarbons including the Cruz de Lorena, Sierras Blancas, Aguila Mora and Coirón Amargo Suroeste blocks.