What follows is an opinion from a United States Court of Appeals.
Intervenors who participated as parties at the courts of appeals should be counted as either appellants or respondents when it can be determined whose position they supported. For example, if there were two plaintiffs who lost in district court, appealed, and were joined by four intervenors who also asked the court of appeals to reverse the district court, the number of appellants should be coded as six.
When coding the detailed nature of participants, use your personal knowledge about the participants, if you are completely confident of the accuracy of your knowledge, even if the specific information is not in the opinion. For example, if "IBM" is listed as the appellant it could be classified as "clearly national or international in scope" even if the opinion did not indicate the scope of the business. 

Your task concerns the first listed appellant. The nature of this litigant falls into the category "private business (including criminal enterprises)". Your task is to determine what category of business best describes the area of activity of this litigant which is involved in this case.

Opinion:
E. I. DU PONT DE NEMOURS COMPANY, Inc., Appellant, v. Leo HALL, Appellee.
No. 6941.
United States Court of Appeals, Fourth Circuit.
Submitted March 11, 1955.
Decided March 11, 1955.
Thomas B. Whaley, Columbia, S. C., for appellant.
Yancey A. McLeod, Columbia, S. C., for appellee.
Before PARKER, Chief Judge, and SOPER and DOBIE, Circuit Judges.
PER CURIAM.
This is an appeal from an interlocutory order denying a motion to dismiss the action on the ground that plaintiff’s sole remedy is under the South Carolina Workmen’s Compensation Act, Code 1952, § 72-1 et seq. It was admitted that a reversal of the holding of the trial judge on this question would result in the termination of the litigation between the parties; and the case is one which illustrates the wisdom of the recent proposal approved by the Judicial Conference of the United States that the statute relating to interlocutory appeals be amended. The amendment of the statute, however, is a matter for Congress, not for the courts; and under the law as it now stands we have no option but to dismiss the appeal, since we are given jurisdiction of appeals from final judgments only, except in the special cases enumerated in 28 U.S.C. § 1292. Baltimore Contractors v. Bodinger, 348 U.S. 176, 75 S.Ct. 249; City of Morgantown, W. Ya.,- v. Royal Insurance Co. Ltd., 337 U.S. 254, 69 S.Ct. 1067, 93 L.Ed. 1347; International Nickel Co. v. Martin J. Barry, 4 Cir., 204 F.2d 583; International Refugee Organization v. Republic S. S. Corporation, 4 Cir., 189 F.2d 858 ; County Bank, Greenwood, S. C. v. First National Bank of Atlanta, 4 Cir., 184 F.2d 152; Baltimore & O. R. Co. v. United Fuel Gas Co., 4 Cir., 154 F.2d 545-
Appeal dismissed.
. The Judicial Conference, of the United States at the September 1953 meeting approved a recommendation of one of its committees that section 1292 of Title 28 of the United States Code be amended by adding thereto the following:
“(b) When a district judge, in making in a civil action an order not otherwise appealable under this section, shall be of the opinion that such order involves a controlling question of law as to which there is substantial ground for difference of opinion and that an immediate appeal from the order may materially advance the ultimate termination of the litigation, he shall so state in writing in such order. The Court of Appeals may thereupon, in its discretion, permit an appeal to be taken from such order, if application is made to it within ten days after the entry - of the order; provided, however, that application for an appeal hereunder shall not stay proceedings in the district court unless the district judge or the Court of Appeals or a judge thereof shall so order.”

Question: This question concerns the first listed appellant. The nature of this litigant falls into the category "private business (including criminal enterprises)". What category of business best describes the area of activity of this litigant which is involved in this case?

Choices:
agriculture
mining
construction
manufacturing
transportation
trade
financial institution
utilities
other
unclear

Answer: 9