1. 1 Unmanned post offices meant millions of letters went unsorted.

2. Colluvium is heterogeneous, unsorted material of all particle sizes (from boulders to clay) with relatively little abrasion to round the particles.

3. A shallow 300 m well was drilled in an alluvial fan deposit made up of unsorted volcanic clasts of andesite and dacite.

4. In the absence of such materials, the dam is built of quarried rock or unsorted pebbly or Bowldery deposits, and the impermeable core is constructed of ordinary concrete or asphaltic concrete.