1999 $'000	1998 $'000
Vehicle services	326,219	346,407
Electrical, mechanical and electronic services	2,343,874	2,105,535
Project and consultancy services	216,655	176,367
Others	26,429	25,381
	2,913,177	2,653,690

4 Operating costs

	1999 $'000	1998 $'000
Staff costs	1,579,931	1,489,248
Materials	275,051	251,276
Contract maintenance	470,255	412,530
Rental and management charges	26,863	44,933
General operating and administration expenses	198,180	126,180
Depreciation	27,903	26,384
Audit fees	509	459
	2,578,692	2,351,010

5 Other income

	1999 $'000	1998 $'000
Bank deposits interest	63,199	36,753

6 Interest expenses

	1999 $'000	1998 $'000
Interest on Government loan repaid and repayable within one year	3,661	4,037
Government loan repayable after one year	20,341	22,379
	24,002	26,416