Table:
text: Sunday Times Rich List 2008
Top 12 fortunes
Top 12 fortunes
Rank_ Value_ Name_ Source_of_wealth _2007_Rank
1 £27700m Lakshmi Mittal Steel 1
2 £11700m Roman Abramovich Oil, industry 2
3 £7000m Gerald Grosvenor, 6th Duke of Westminster Property 3
4 £6200m Srichand and Gopichand Hinduja Industry and finance 4
5 £5726m Alisher Usmanov Steel and mining [new entry]
6 £5650m Ernesto and Kirsty Bertarelli Pharmaceuticals [new entry]
7 £5400m Hans Rausing Food packaging 6
8 £4650m John Fredriksen Shipping 8
9 £4330m Sir Philip Green Retailing 7
10 £4300m David and Simon Reuben Property 8
11 £3974m Leonard Blavatnik Industry [new entry]
12 £3730m Seán Quinn Quarrying, property, insurance 12

Question: Which source of wealth is worth £5726m in the Sunday Times Rich List 2008?