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.
Mount Everest, the highest mountain in the world at 29,035 feet (8,850 meters), is also the highest graveyard. Many climbers have died on Mount Everest since 1921 and over 200 of them are still on the mountain. Some are buried in crevasses, some fell down remote parts of the mountain, some are buried in snow and ice and some lie in the open. And some dead climbers sit beside the popular routes up Mount Everest.