on a subsidiary showing, on which the affidavit was silent, that defendant or others in its industry customarily conducted drilling operations with their own employees, rather than subcontractors. The conclusory statement that Georgia-Pacific is not engaged in the business of selling used sawmill equipment, like the conclusory statement in Chavers, “offers no enlightenment” on matters that, in our view, are “essential to a proper disposition of the motion for summary judgment.” Id. at 318. See also Pitts v. Shell Oil Co., 463 F.2d 331, 334 (5th Cir.1972) (on issue whether plaintiff was employee or independent contractor, which depends on who has right to control the details of the work, self-serving conclusions of defendant’s affidavit cannot support summary judgment); Fowler v. Southern Bell Telephone & Telegraph, 343 F.2d 150, 154 (5th Cir.1965) (defendant’s sworn, conclusory statements, unsupported by specific facts, that they were acting within scope of employment could not support summary judgment).
Absent the conclusory claim that Georgia-Pacific is not engaged in the business of selling sawmill trimmers, the affidavit cannot support the summary judgment. The affidavit leaves many material fact questions about Georgia-Pacific’s sales of used sawmill equipment unanswered. For example, Georgia-Pacific made no showing with respect to (1) the number of used equipment sales made by Georgia-Pacific; (2) the amount of revenue generated by those sales; (3) the number of employees or the extent of other corporate resources devoted to making the sales; or (4) the use of advertising or other marketing techniques to publicize the availability of used equipment for sale. While summary judgment may have been proper under the district court’s view of Texas law, under which these questions are immaterial, it cannot stand under our understanding of comment f. Since the affidavit leaves open the possibility that these questions will be answered in a manner favorable to Galindo, summary judgment for Georgia-Pacific was improper.
Georgia-Pacific’s reliance on Bailey v. ITT Grinnell Corp., 536 F.Supp. at 84, is misplaced. In Bailey, defendant purchased a punch press, used it in its business for a number of years, and then sold it through a used equipment broker. The district court, applying Ohio law, granted summary judgment for the defendant on the ground that the sale was an occasional sale exempted by comment f from section 402A liability. Defendant admitted selling the punch press that allegedly caused plaintiff’s injuries, but submitted an affidavit that stated it “is not and has never been, a designer, manufacturer, assembler, marketer, rebuilder, distributor, retailer, or seller of punch presses.” The court held that this affidavit was sufficient to shift the burden to the plaintiff to demonstrate a fact question for trial. The court further held that plaintiff could not discharge that burden by reliance on the claim that “[defendant’s] corporate size creates an inference that [defendant] transfers numerous presses.”
In Bailey, there was nothing in the record to indicate that defendant had made other sales of punch presses. The affidavit stated that, but for the sale of the press involved in the case, defendant had never been a seller of punch presses. In this case, on the other hand, Galindo does not have to infer from Georgia-Pacific’s size that it has made more than one sale. The affidavit itself states that other sales have in fact been made. Moreover, the affidavit does not make a prima facie showing that, although other sales have been made, sales efforts do not rise to the level of a business in which Georgia-Pacific is engaged. On the record before us, that is an open question. Cf. Walker v. Skyclimber, Inc., 571 F.Supp. 1176, 1179 (D.V.I.1983) (affidavit that defendant “is not in the business of selling, distributing, advertising, or maintaining any sales agency,” sufficient to shift summary judgment burden; nothing in the record to indicate that other sales had been made).
What we have said thus far obviously disposes of Galindo’s claim that the record