India, Jan. 11 -- Rescuers detected signs of life in an avalanche of garbage that killed at least four workers and left more than 30 others missing on Thursday in a central Philippines landfill and plan to intensify search efforts, an official said on Saturday.

Twelve workers have been rescued with injuries from the huge mound of garbage that collapsed among the low-slung buildings of a waste management facility in the village of Binaliw in Cebu City, authorities said. Dozens of rescuers, including police, firefighters and disaster-response personnel, have raced against time to find more survivors in dangerous conditions in the rubble of twisted tin roofs, iron bars and combustible heaps of garbage and debris.

"Authorities confirmed the...