Further additions were made to the school in 1911 and 1920.

Further additions were made in the second half of the 15th century.

The structure dates to 1926, a further addition came in 1935.

The building has had further additions made, probably during the 18th century.

The 1870s witnessed little further addition to the plant of the works.

Further additions can be made while the issue remains open.

Further additions were made to it in the 1930s and 1940s.

However, since 1990 there have been no further additions to the series.

This in turn leads to further addition to river pollution.

Further additions to the network were made, starting in 1960.