For the efficient administration and enforcement of this chapter, the provisions (including penalties) of sections
46,
48,
49 and
50 of title
15 (except paragraphs (c) through (h) of section
46 and the last paragraph of section
49 of title
15), and the provisions of section
409
(l) of title
47; are made applicable to the jurisdiction, powers, and duties of the Secretary in administering and enforcing the provisions of this chapter and to any person, firm, or corporation with respect to whom such authority is exercised. The Secretary, in person or by such agents as he may designate, may prosecute any inquiry necessary to his duties under this chapter in any part of the United States, and the powers conferred by said sections
49 and
50 of title
15 on the district courts of the United States may be exercised for the purposes of this chapter by any court designated in section
674 of this title.