Shipments of stone from U.S. and Canadian ports totaled 3,346,002 net tons in April, an increase of 6.4 percent compared to a year ago. The increase came entirely at Canadian ports; loadings at U.S. docks slipped by about 50,000 tons.
For the season, the stone trade stands at 3.5 million tons, a virtual tie with the same point in the 2000 navigation season.
April 2001 | April 2000 | Season-To-Date 2001 | Season-To-Date 2000 | |
| U.S. Ports | 2,553,496 | 2,602,713 | 2,630,363 | 2,863,232 |
| Canadian Ports | 792,506 | 540,681 | 867,782 | 640,051 |
Total | 3,346,002 | 3,143,394 | 3,498,145 | 3,503,283 |