Desc: Hard Rock Harrigan: Directed by David Howard. With George O'Brien, Irene Hervey, Fred Kohler, Dean Benton. Tim 'Hard Rock" Harrigan, a construction-crew driller working on the site of the Boulder Dam, is in a constant feud with his crew-boss "Black Jack" Riley, because of Harrigan's dislike of Riley's hard-as-nails management of the men, and also because he and Riley are both courting the lady who bakes the pies at the camp commissary, "Andy" Anderson.