According to Mark Conrardy, sales engineering manager at Wacker Corp., soil can be broken down into four basic groups: clay, silt, sand and gravel. "The most important characteristic is particle ...

Our interest in particles in soils stems from the strong association between some contaminants (e.g., plutonium) and particles and the potential for particle-facilitated transport of these ...

Often called topsoil, this layer features organic matter along with a good mix of particle sizes, known as texture, found in ...

In their paper, published in the journal Nature, the group describes their analysis of radiation data sent back from the rover's alpha-particle X-ray spectrometer. As part of soil testing ...