While awaiting the first delivery of stone, Simson noticed that the battlefield landscape features were beginning to deteriorate. Seeing an opportunity to not only preserve a portion of the battlefield but also keep his staff occupied, Simson decided to preserve a short section of trench line and make the Grange Subway more accessible. Labourers rebuilt and preserved sections of sandbagged trench wall, on both the Canadian and German sides of the Grange crater group, in concrete. The workforce also built a new concrete entrance for the Grange Subway and, after excavating a portion of the tunnel system, installed electric lighting.