DuPont, Dow make their huge merger official

Specialist Thomas McArdle (left) works with traders at the post that handles Dow Chemical on the floor of the New York Stock Exchange. If a proposed merger goes through, Dow's and DuPont's respective shareholders would own about half of the new entity.
Specialist Thomas McArdle (left) works with traders at the post that handles Dow Chemical on the floor of the New York Stock Exchange. If a proposed merger goes through, Dow's and DuPont's respective shareholders would own about half of the new entity.