A small diameter hand-held roller is manipulated forcefully over a sheet of molten glass to produce heavy ripples, while folding and creasing the entire sheet.
Although the park's grasslands are no longer pristine, they are recovering nicely and have small areas dominated by little bluestem and bushy bluestem.
Other uses include retaining walls, temporary floodwalls, silt filtration from runoff, for small or temporary/permanent dams, river training, or channel lining.