Detailed petrographic exploration and description of bore core\u00a0 – shallow core drills to depth 4 m with 50 mm dimaeter.<\/p>\n
Hydrogeological core holes realized\u00a0 in determinated areas – 200 mm diameter drills to quaternary base cased with\u00a0 PVC well strainer\u00a0 140 mm diameter, case perforation\u00a0from 2 m depth up to\u00a0 bottom,\u00a0 used plastic centralizer;\u00a0 between casing and hole wall fillied up by sorted gravel\u00a0 4 \u2013 8 mm grade;\u00a0 clay seal on the top part of hole.<\/p>\n
03\/2017<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Detailed petrographic exploration and description of bore core\u00a0 – shallow…<\/p>\n