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.
Many mistakenly think Americaâs Yellowstone National Park is the oldest national park in the world, but thereâs one that is over 100 years older. Established by the Mongolian government in 1778, the area surrounding Bogd Khan Uul Mountain is actually the oldest national park in the world. It is located south of the countryâs capital, Ulaanbaatar, and takes three to four hours to hike.