The solid is a mixture of the two principal phases.

Four principal phases can be identified in the population trends during the two centuries between 1801 and 2000.

There are two principal phases of underground mining: development mining and production mining.

The house has three principal building phases.

Temple 22 underwent three principal phases of construction.

The site lies among sugar plantations on the Pacific coastal plain and its principal phase of occupation is dated to the Classic Period.

There were four principal phases of construction and there is evidence that the temple had been repaired various times prior to the Conquest.

The Ubaid period is divided into three principal phases:

This approach consists of three principal phases (systems evaluation, compliance testing and tests of detail), each of which should be supported by working papers.

It is a two-story Georgian and Federal style frame house built in two principal phases.