By December, nine 3-inch and two 2-inch Hamel pipelines and four 3-inch and two 2-inch Hais cable pipelines had been laid, a total of seventeen pipelines. The Dumbo system was shut down on 7 August 1945, by which time the pipelines had carried 180 million imperial gallons (820 million litres) of petrol. The Pluto pipelines were responsible for about 8 per cent of the deliveries of petroleum products from the United Kingdom to the Allied Expeditionary Force in North West Europe.