011W0004 https://collections.naturalsciences.be/ssh-geology-archives-plone6/boreholes/descriptions/ocr-descriptions/011w/011w0004 https://collections.naturalsciences.be/ssh-geology-archives-plone6/@@site-logo/logo-rbins.jpg 011W0004 PL. HEIST 11W A.Rutot 1894-1895 4 (IV) alq Sondage: sable jaune, meuble, aquifère à 1m50 3.50