The Chimney stack was accessed by aide, ascending from the ground up using Hilti Mechanical Shear Set Bolts. Cover meters were used to map reinforcing and plot locations for core samples. Once core samples were taken holes were entered with a Bore Scope to survey strata and lead chimney lining seals. Schmitt Hammer and Impact Echo tests were used. On completion of testing holes were repaired. As part of the work a structural integrity survey of the existing Access Ladders and Platforms was under taken.