Singapore’s JTC Corporation will decide in November whether to go-ahead with a US$450M plan to excavate a network of underground caverns. The plan is to create a 4M cubic metre underground oil and petrochemical storage facility. A preliminary study has already found that the scheme, which involves the construction of 32 underground caverns, is technically viable. The unlined caverns will be built up to 80m below ground level and each cavern must have a storage capacity of 125,000 cubic metres. Construction would be carried out in stages with up to three years allowed to tunnel and complete each cavern.