NJD Asphalt Services Ltd specialize in Diamond Core drilling. We have two core drills and the majority of this service is mainly requested by the States of Jersey although we have also used our drills on private work mainly for investigation purposes before the work starts.  

Any major road re-surface projects normally start with core drilling, this gives the States of Jersey a good indication of the thickness of their road in different areas. To date NJD have provided more than 1000 core samples prior to major re-surfacing projects throughout the island West Park Roundabout, La Grande Route de St Clement, La Grande Route de St Martin, St Peter’s Valley and La Route des Quennevais are just some projects to mention.