Here are the materials in Atlantic Richfield Co. v. United States (D. N.M.):

32 US Motion to Dismiss

34 Laguna Construction Co Motion to Dismiss

36 Laguna Pueblo Motion to Dismiss

46 AR Response to US Motion

47 AR Response to Pueblo Motion

48 AR Response to LCC Motion

63 LCC Reply

64 US Reply

67 Pueblo Reply

71 DCT Order Granting US Motion

73 DCT Order Partially Granting Pueblo Motion

75 DCT Order Denying LCC Motion

Complaint here.