15-20    National Railway Freight Traffic by Category of Cargo
Item	2000			2001
	Freight	Freight	Average	Freight	Freight	Average
	Traffic	Ton-kilometers	Transport	Traffic	Ton-kilometers	Transport
	(10 000	(million	Distance	(10 000	(million	Distance
	tons)	ton-kilometers)	(km)	tons)	ton-kilometers)	(km)
Total	165498	1333606	806	178592	1424980	798
Coal	68545	380605	555	76625	427604	558
Coke	4725	40215	851	4986	41976	842
Petroleum	9391	81599	869	9852	89996	913
Steel and Iron	11537	124445	1079	12894	134751	1045
Metal Ores	13022	61646	473	14987	77450	517
Nonmetal Ores	8138	47265	581	8498	50245	591
Mineral Building	9671	49315	510	9799	50494	515
Materials
Cement	3900	16739	429	3930	16357	416
Timber	3436	58808	1712	3366	58429	1736
Chemical Fertilizers	5189	61186	1179	5601	67555	1206
and Pesticides
Grain	7935	101257	1276	7090	93638	1321
Cotton	233	6472	2772	161	4858	3017
Salt	1245	9383	753	1216	9231	759
Others	18531	294671	1590	19587	302396	1544