Clough's joint venture with Randall Process Systems of USA (AKA ABB Randall Corporation) and T O'Connor & Associates of Adelaide (Randall O'Connor Clough) undertook the complete engineering, procurement, construction and commisioning for the Kwinana liquid petroleum gas (LPG) plant for Wesfarmers Kleenheat Gas Pty Ltd.

The project involved lead engineering in civil, mechanical, electrical, instrumentation, architecture, detailed engineering in all disciplines, procurement, site construction, commissioning, and the provision of project management support services for scheduling, cost control and accounting.

The plant was designed to extract up to 150,000 tonnes of LPG, butane and propane per annum from natural gas piped to Perth from the Northwest Shelf.