Products Wastewater Grit Removal PISTAÂ® Grit Chamber. High removal efficiencies originate from the PISTAÂ® Grit Chamberâs unparalleled hydraulic design, including its flat chamber floor, patented and low-energy axial-flow propeller.ISTAÂ® Grit Chamber. High removal efficiencies originate from the PISTA Â® Grit Chamberâs unparalleled hydraulic design, including its flat chamber floor, patented and low-energy axial-flow propeller.
The Barberton Greenstone Belt in South Africa is estimated at 3.4-3.6 billion years old, and generally regarded as the world's oldest mountains. Their age is indisputedly older than anything in North America (the Appalachians / Blach Hills / Porcupines / Smokies etc) and only Western Australia lays a possible claim.
An active volcano for centuries, the mountain Hekla is one of the most famous in the world. Hekla is a stratovolcano, located near the southern end of the eastern rift zone in Iceland.The whole mountain ridge of Hekla is about 40 km long.The fissure, Heklugja, heklugjÃ¡ which splits the, ridge is about.5 5 km. longekla is a stratovolcano, located near the southern end of the eastern rift zone in Iceland. The whole mountain ridge of Hekla is about 40 km long. The fissure, Heklugja, heklugjÃ¡ which splits the, ridge is about.5 5 km. Long the mountain is about, 1 491 m. high