Inventories (Tables)

12 Months Ended

Dec. 31, 2018

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Summary of Inventories

Million US dollar	2018		2017
Prepayments		123		101
Raw materials and consumables		2 387		2 304
Work in progress		363		387
Finished goods		1 215		1 216
Goods purchased for resale		146		111
Inventories		4 234		4 119
Inventories other than work in progress
Inventories stated at net realizable value		59		57