The restoration of the stonework formed a critical part of the overall project. Stone copes formed the basis for the iron railings at the perimeter of both the Valley Cemetery and the Drummond Pleasure Ground. Many copes had been shattered by corrosion of the iron bars and required replacement. As many as possible of the original stones have been retained and re-used. More specialist works were necessary to conserve the Sconce Monuments, six sandstone Reformers Statues and the marble figures of the Virgin Martyrs' Monument. Missing limbs and heads on all these sculptures have been replaced, following the research of archives and close studies of the remaining sculptures.