WOVEN WIRE CLOTH; WIRE FORMED AS A SLACK HOLLANDER WEAVE; ELONGATE SHEETS OF WOVEN WIRE CLOTH FORMING SAND FILTERS FOR USE IN OIL GAS WELLS; ELONGATE SHEETS OF WOVEN WIRE CLOTH ADAPTED TO CO-OPERATE WITH OTHER SIMILAR ARTICLES TO FORM A LINER FOR A SUBTERRANEAN BORE EXTENDING THROUGH OIL BEARING STRATA, TO PREVENT PARTICULATE MATERIAL FROM ENTERING THE BORE