its operator, Salt Union Ltd., to be "Britain's oldest working mine". Salt Union Ltd. is part of the US-owned group of companies Compass Minerals. Today, rock salt is quarried from a depth of more than 150 metres, producing salt (commonly known as "grit") for use as a de-icing agent on roads. The mine produces one million tonnes of rock salt annually, and has a network of over of tunnels over several square miles underneath the area between Winsford and Northwich. A worked-out part of the mine is operated by DeepStore Ltd., a records management company offering a secure storage facility. Confidential government files, hospital patient records, historic archives belonging to The National Archives, and business data are stored in the mine, where the dry and stable atmosphere provides ideal conditions for long-term document storage. Retail Supermarkets Asda and Aldi are in the town centre, Morrisons and Co-op are in Wharton and Tesco is in Over. There are branches of various national chain stores. The shopping centre is a 1970s design, with retail units and a multistorey car park subsequently added. In 2018 Winsford Cross Shopping Centre was bought by Cheshire West and Chester council for approximately £20 million. The Jiffy Bag has traditionally been manufactured in the town and sells to packaging businesses as well as retail and post offices. Local media Winsford has one local newspaper, the weekly Winsford and Middlewich Guardian, published by the Newsquest Media Group). The town used to be served by a second weekly paper, the Mid-Cheshire Chronicle, published by Trinity Mirror, but the title ceased publication on 30 September 2009. A community radio station, Cheshire FM, broadcast from studios in Winsford to the mid-Cheshire region of Northwich, Winsford and Middlewich from 30 March 2007 to January 2012. Mid-Cheshire Radio launched online in January 2013. Traffic and local news is now provided by BBC Radio Manchester, Signal 1, Silk FM, Capital Manchester and Capital North West and Wales Infrastructure BT have a large employment base in the town. The Winsford telephone exchange is a main handover point and provides fibre broadband services to Winsford, Moulton, Whitegate, Tarporley, Middlewich, Sandbach, Holmes Chapel, Lower Withington and Sandiway. It also provides the main critical national infrastructure circuits to Cheshire Police HQ, plus Leighton, Macclesfield, Chester, Warrington and Halton hospitals, as well as numerous telephone masts, schools and doctors' surgeries across Cheshire. The National Grid also have a main