However, it wants to use it for tipping away "inert" clay and sand from building sites instead.

BBC: Woodeaton villagers fight quarry reopening

We also dig out some 110 mcm of gravel, sand, aggregates and clay.

FORBES: Despite NPR, No, Burning Trash Is Not Profitable

Most dirt composition is high in either clay or sand.

CNN: X-rated yards save the environment

Extracting the bitumen from the clay and sand and upgrading it into crude oil--by breaking its big hydrocarbon molecules into smaller, less viscous ones--is an expensive, energy-intensive process that consumes 650 cubic feet of natural gas for every barrel.

FORBES: On The Cover/Top Stories

The soil consists of a chalk subsoil, topped by a covering of rubble that is made up of sand, lignite, marl, loam and clay.

WSJ: Reflections on Champagne

In creating his "fungus accretion" vases, Simon brushed the rough surface of a ceramic vase with a clay-and-water solution until it built upon itself like a hand-dripped sand castle.

WSJ: The Wonder Twins of the Design World: Nikolai and Simon Haas | Designers