Carried out NDT inspection for cracking on nine (9) roof supports) - extra time taken due to delays with cleaning each roof support and then encountered thick grease on two roof supports, sourced degreaser and pump packs from diesel workshop and spare parts, applied and allowed time to dissolve, then commenced further cleaning to achieve surfaces appropriate for testing - allow 2 hours for grease cleaning process for chock 321 and 315 on top of other roof supports which were cleaned prior to testing. 313 chock was unable to be tested on this day due to in-accessability - to return at 6am tomorrow to complete testing on 313. - Due to nature of work, i had to shower prior to leaving site due to physical dirty condition.