If an employee is to be exempt under section 13(b)(14), he must be employed by an “establishment” which is “commonly recognized as a country elevator.” If he is employed by such an establishment, the fact that it may be part of a larger enterprise which also engages in activities that are not recognized as those of country elevators (see Tobin v. Flour Mills, 185 F. 2d 596) would not make the exemption inapplicable.