Alerts & Learnings Wireline mast column stop plate falls 65ft As the 90ft Wireline Mast was rigged up in preparation for operations, a dropped object was reported within the restricted access area. The area was secured and a sweep of the worksite performed, leading to the discovery of a mast column stop plate and four sheared 12mm HEX bolt heads, with a further 2 bolt heads later identified. The stop plate weighing 1.8 kg had become detached from its position and dropped 19.8m / 65ft to deck. To view this DROPS alert in full, click the 'Download' button above. Download Alert Rate this Alert Your Rating Average Rating Share: Share on Linkedin Share on Facebook Share on Twitter Share with Email