Geologists at Mount Saint Helens in Washington, United States. A geologist walking up the rocks in the area of the volcanic eruption at Mount Saint Helens. The geologists beside a helicopter in the eruption area. Dried wood on the hill covered with grey ash. Rocks formed from the eruption. Other mountains and hills in the background. A man walks about looking at the hardened emissions on the ground.
Geologists at Mount Saint Helens in Washington, United States. Two geologists beside a huge rock formed during the eruption of stratovolcano Mount St. Helens. One of them fixes a tool on the rock. The other geologist takes a photograph of the rock. The geologist on top of the rock. Two men talking beside a helicopter. One of them seated on the ground and logging the findings. Uprooted trees on the hill. The seated man writes. A man walking beside a hill on which thickened lava deposit is visible. The man collecting samples and walking to the helicopter.
Geologists at Mount Saint Helens in Washington, United States. The geologists get down a helicopter in the area of eruption of stratovolcano Mount Saint Helens. One of them moves holding a small axe. Dried fallen trees covered with ash. Two geologists walk through the area. The men beside a rock with molten lava deposit. One of them holding a shovel has a camera hung across his shoulder. The other geologist examines the rock with his axe. The man taking pictures with the camera. A small stream flowing among the rocks. The geologist inspects the rocks and the other geologist takes pictures. One of the men walking in the area where several rocks are formed due to the eruption.
Exercise Bright Star 80 in Egypt. U.S. soldiers of the 1st battalion, 502nd Infantry, 2nd Brigade, 101st Airborne Division (Air Assault) coach Egyptian troops in firing M-79 grenade launcher attached to M-16 rifles. American soldiers guide the Egyptian soldiers about handling and firing of rifles at a firing range in Egypt. Hits at the target area as Egyptian troops fire rifles and smoke rises. A man with a rifle in the foreground as firing continues. Soldier loads the launcher and targets the rifle towards the sky.
Exercise Bright Star 80 in Egypt. Shadow of a helicopter in flight as a soldier from the 1st battalion, 502nd Infantry, 101st Airborne division looks down from the helicopter. Two soldiers with their faces covered inside the helicopter. A-7 plane makes a bomb run over desert target area and explosion occurs in the desert. Smoke rises after the explosion.
Workers engaged at asbestos work sites in United States. Industrial hygienist explains about workers who breathe in asbestos indirectly. Workers include pipe fitters, welders, mechanic, ship builders and others. Industrial hygienist states that industrial hygienists who work at asbestos work site, should be aware of exposure of asbestos and use protective gear while working. He shows two variety of asbestos including amosite and chrysotile, which is used by ship builders. He shows health standards and measures for protection from asbestosis. He explains air sampling device and its functions. A chemist works with microscope and other equipment to measure sample in chemical laboratory. Scientific studies conclude protection is required with increasing concentration of fibers during working hours.
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