The city that kicked off a gay-marriage revolution, cracked down on Happy Meal toys, and battled bottled water is gunning for a new first. San Francisco wants to lead the nation in limiting fossil fuel exports.

At a hearing scheduled for Thursday, the San Francisco Environment Commission will consider a proposal to ban the bulk transportation of “hazardous fossil fuel materials,” such as coal and petroleum coke, within city limits. If the commission agrees, the proposal will be passed up to city and/or port leaders for further consideration. The proposed ban would also apply to crude oil, though crude exports are currently banned nationally — a ban that industry is fighting to overturn.

San Francisco isn’t acting alone in trying to stymie exports of coal and other fossil fuels to Asia. In February, the city’s lower-income neighbor, Oakland, rejected a bid by Bowie Resource Partners to use its port as a coal export terminal. And residents throughout the Pacific Northwest have been successfully campaigning against proposals to build hulking new coal terminals along their waterfronts.