Pond Bottom of Baihuazhou Starts Dredging Horologic Monitoring Carried out by Underground Drilling

　　On December 20th, the dredging at the pond bottom of Baihuazhou located in the ancient Ji’nan City was carried out. While the large-scale pump is emptying the water in the spring pool, the small excavator starts to clear the silt from the bottom of the pool from south to north. The thickness of the silt cleared is about 1 meter.