August 2002. The following article on Grand Canyon National Park River Management meetings should encourage everyone to attend Tuesday's meeting in Las Vegas and Thursday's meeting in Mesa Arizona. If you can't make it to one of those meetings, the informational posters displayed can be found at http://www.nps.gov/grca/crmp/public/index.htm. Click on the "Informational posters" link found in the red box, midway down the page. The "Permit System" and "Concessions Management" posters may be of particular interest.