Singrauli main basin lies in the western part of the coalfield and is largely unexplored.

Huskisson Dock consists of a main basin nearest the river wall and two branch docks to the east.

The main basin was enlarged and a branch dock created in the 1860s to accommodate larger ships.

To make the correspondence precise, the basins had to be stretched slightly more in one direction, along the main basin, than across.

The Kosovo basin has so far been the main basin used for mining.

The main basin is that of the Chattahoochee River, running northeast to southwest.

Within the main basins are lesser ones, some of which are recognized as separate seas.

It was filled in during the 1960s, and the site of the main basins now lies beneath the car park of a retail shopping centre.

It is a matter of some debate whether the basin dried out at the same time as the main Mediterranean basins.

The lagoon is shallow, without entrance, and formed by three main basins.