Even with the addition of larger quantities of ash to achieve the stabilization required, the fly ash treatment is 4. generally more economical than the lime and cement alternatives. Typically, the delivered cost. of fly ash will range from $18 to $30 per ton and depends on the ash source and haul distance.
The Zapatista Army of National Liberation (EZLN) is a revolutionary leftist movement that originated in Chiapas, a southernmost state in Mexico. The group was mainly made up of the rural indigenous people with support from some urban areas and international support.
Mexico's Zapatista rebel movement marks 20 years. Masked members of the Zapatista National Liberation Army, EZLN, raise their fists during an event marking the 20th anniversary of the Zapatista uprising in the town of Oventic, Chiapas, Mexico.(Photo: Eduardo Verdugo, AP)