How to Use "excavation" with Example Sentences

1. But further excavation efforts failed in 1970 , 1971 , 1974 and 1979 .
2. Archaeologists said further excavation was impossible because the destruction was so bad .
3. On october 18th , therefore , 19 robots competed in the regolith excavation challenge .
4. Excavation was under way on a new trench , on the other side of a low limestone ridge .
5. An excavation of a bronze-age city in south-eastern iran turned up a pair of dice dating back nearly 5000 years .