	Subsidiaries and joint operations				Equity accounted units (Rio Tinto share)				Group total
		2017	2016	2015		2017	2016	2015		2017	2016	2015
The principal locations of
employment were:
Australia and New Zealand		19,041	20,489	22,125		602	849	863		19,643	21,338	22,988
Canada		10,256	10,239	11,113		-	-	-		10,256	10,239	11,113
UK		309	487	542		-	-	-		309	487	542
Europe		1,505	1,722	2,312		-	-	-		1,505	1,722	2,312
Africa		3,461	4,875	5,651		1,269	1,270	1,271		4,730	6,145	6,922
US		3,429	3,196	3,439		-	-	-		3,429	3,196	3,439
Mongolia		2,861	2,737	2,647		-	-	-		2,861	2,737	2,647
Indonesia		1,642	2,862	2,871		-	-	-		1,642	2,862	2,871
South America		197	166	192		1,237	1,388	1,317		1,434	1,554	1,509
Other countries ^(a)		998	749	595		-	-	-		998	749	595
		43,699	47,522	51,487		3,108	3,507	3,451		46,807	51,029	54,938

(a)

“Other countries” primarily includes employees in the Middle East (excluding Oman which is included in Africa), India, Singapore and other countries in Asia which are not shown separately in the table above. For the year ended 31 December 2017, the average number of employees in Singapore was 434 (2016: 262) and the average number of employees in India was 310 (2016: 280).