How to Sift Stones Out of Soil Home Guides SF Gate
Getting pebbles and small stones out of or garden. Category Howto
Soil properties — Science Learning Hub
Soil structure describes the way the sand, silt and clay particles are clumped together. Organic matter (decaying plants and animals) and soil organisms like earthworms and bacteria influence soil structure. Clays, organic matter and materials excreted by soil organisms bind the soil
The easiest way to separate gravel from dirt
Because it doesn''t deteriorate over time, gravel is common as a permanent mulch around shrubs and trees. However, if you put gravel down on the ground without soilblocking landscaping cloth beneath it, eventually the gravel begins to sink into the soil, creating a dirtfilled gravel mulch.