The last major excavations took place in the period 1950-60.
The first major excavations of the site occurred in 1953 to 1967.
A major archaeological excavation took place in the years 1986 to 1990.
A major excavation can only mean more work for your people.
Four major archaeological excavation were undertaken from 1972 to the early 1990s.
This town was the site of major German archaeological excavations between 1963 and 1981.
He first got there in 1967, but the dust prevented major excavation.
As a result of this a second major three-month excavation followed in 1995.
Smaller finds come to light almost every time that a major excavation is undertaken.
Jacques de Morgan conducted major excavations from 1897 until 1911.