Even in a time of market collapse and downsizing, some industry firms continue to be a great place to work, according Fortune Magazine’s annual list of the “100 Best Companies To Work For.” The list, published in Fortune’s Feb. 8 issue, is based on extensive employee surveys along with analyses and a “culture audit” by the magazine. Highest ranked among industry firms was Denver-based PCL Construction Enterprises at No. 31. Other contractors listed were DPR Construction, Redwood City, Calif., at No. 57; Balfour Beatty Construction, Dallas, at No. 76; and Gilbane, Providence, R.I., at No. 92. Cary, N.C.-based engineering firm Kimley-Horn ranked No. 62 despite having to lay off 455 employees last year. Fortune says Kimley-Horn softened that blow by an active relocation program. Coming in at No. 39 on the Fortune 100 list was Dallas-based mechanical contractor TDIndustries, which was the only industry firm on the list to show job growth in 2009, increasing its workforce by 7%, according to Fortune.