Different types of fly ash that have been collected for various cogeneration facilities around California. Note differences in texture and color that reflect the different components of the fly ash. Cow on fly ash to determine possible irritation effects on teats or feet. The pH distribution of various proportions of fly ash and separator manure mixtures used in the laboratory studies. The results in Test 1 were mixtures of fly ash with separator manure while those in Test 2 were with mixtures of alley manure and free stall bedding.
Pink lines are the fly ash stalls while the blue lines are the manure and hulls.
Arrows indicate th e date when bedding was reloaded.