A new round of explosive eruptions from the volcano prompted the evacuation of another 500 families from the northern Philippines region, civil defense officials told GMANews.com.
In the meantime, a crew has begun dredging a nearby river to remove debris from the volcano, which began erupting Nov. 6.
Officials have not yet raised the threat level at Mount Bulusan; however a 4-mile restricted zone around the mountain remained in effect, China's official Xinhua news agency said.
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