Coal miners from states including Alabama and West Virginia picketed outside BlackRock Inc.’s New York headquarters Wednesday in a bid to get the world’s largest asset manager to pressure Warrior Met Coal Inc. for better wages and employee benefits.

About 120 miners and supporters descended on BlackRock’s offices in midtown Manhattan, carrying signs that read "we are one," chanting in unison and speaking out against their treatment by the coal company. Union members from other industries joined the picket line, while truck drivers and garbage men who drove by honked in solidarity. BlackRock was listed as Warrior Met’s biggest shareholder as recently as March 31.