For some other structures of the time, hard clay soil provided a firm base.

But if you have a heavy clay soil, wait for warmer weather.

Away from the river, the higher land is mainly a heavy clay soil with few large settlements.

It can be found on open grasslands, often in clay soils.

The clay soil in the area was conducive to brick making.

Its name is derived from the clay soil, which was used to produce bricks.

The moraine has left the city with mostly clay soil.

The clay soils were turned into a thriving brick industry.

Clay soil can pose problems for traffic when moisture is present.

He did not think very much of the clay soil, poor timber and swamps.