A person responsible for the implementation of electronic data interchange systems between companies. The EDI analyst is technical consultant for the trading partners and is involved with deploying systems using the traditional EDI standards and XML-based Web implementations.
Volcanic ash is also harmful when inhaled and  can damage the eyes and lungs. It can clog the engines of cars and  aircraft, and can bring down planes in flight. In some eruptions,  superheated clouds of ash and gas called pyroclastic flows race  down the slopes of a volcano.
Composite volcanoes are made of alternating layers of lava flows and pyroclastic material. When it has quiet eruptions the sides are covered with lava flows, and during explosive eruptions the pyroclastic material is deposited around the vent. ALSO CALLED STRATOVOLCANO.