opinion: OPINION OF THE COURT
  PER CURIAM.
  In the instant ease Post Houses, Inc. seeks to review and set aside an Order of the National Labor Relations Board and the Board has cross-petitioned for enforcement.
  The record discloses that on August 10, 1965, the Hotel & Restaurant Employees and Bartenders International Union, Local 397, filed unfair labor practice charges with the National Labor Relations Board alleging that Post Houses, Inc. had engaged in conduct in violation of § 8 (a) (1), (3) & (5) of the National Labor Relations Act-,’ 29 U.S.C. § 158(a) (1), (3) & (5), and that after hearing, the Board found that Post Houses, Inc. violated § 8(a) (1), (3) & (5) of the Act, by laying off an employee, Joseph Duffy, because of his union activities; by threatening its employees with reprisals for union activities; by creating an impression of surveillance of their union activities; and by refusing to bargain collectively with the union on or after its request of July 6, 1965.
  The record also discloses that the Board ordered Post Houses, Inc. to cease and desist from the unfair labor practices found and from infringing upon its employees’ rights under § 7 of the Act (29 U.S.C. § 157); to offer to reinstate Joseph Duffy with back pay; and to bargain collectively with the union upon request and post appropriate notices.
  Post Houses, Inc. in its petition for review contends that the Board erred in making its findings and in entering its Order. The Board urges that substantial evidence in the record sustains its findings and its Order.
  On review of the record we subscribe to the Board’s contention. The petition for review will be denied and the Board’s Order will be enforced. An appropriate Order may be submitted by the Board.
instruction: 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)", specifically "unclear". Your task is to determine what subcategory of business best describes this litigant.
choices: auto industry chemical industry drug industry food industry oil & gas industry clothing & textile industry electronic industry alcohol and tobacco industry other unclear