The Blackhawks announced Monday that they signed Mark McNeill and Phillip Danault to three-year contracts.The two were the Blackhawks' first-round selections at the 2011 NHL Entry Draft last summer, with McNeill selected 18th overall and Danault going 26th overall.The 18-year-old McNeill has 38 points this season with the Prince Albert Raiders, good for second on the team. He is also second in the Western Hockey League with four short-handed goals. McNeill has a point in 18 of his last 19 games and currently has a nine-game point streak (nine goals, eight assists).Danault, also 18, is second on the Victoriaville Tigres in scoring with 28 assists. He has 34 points in 33 games this season.