332 So. 2d 280 (1976)
NORTH AMERICAN CONTRACTING CORP. et al.
No. 57870.
NORTH AMERICAN CONTRACTING CORP. et al.
v.
John GIBSON et al.
No. 57870.
Supreme Court of Louisiana.
May 11, 1976.Writ refused. On the facts found by the court of appeal, there is no error of law in its judgment.