Complex sentence: Due to the nature of land surrounding the accident site, some earthworks will be required to provide a solid footing enabling heavy lifting to be used for the removal of rollingstock damaged in the accident in preperation for transport to a secure facility in Melbourne for further investigation.
Split into simpler sentences: Due to the nature of land surrounding the accident site, some earthworks will be required to provide a solid footing enabling heavy lifting to be used for the removal of rollingstock damaged in the accident. Once removed from the line, the damaged rollingstock will be transported to a secure facility in Melbourne for further investigation.