Vinyl ester resin is worked into Kevlar fabric formed in a mold to make a Prism canoe at the Wenonah Canoe factory in Winona, Minnesota, U.S., on March 21.

Photograph by Ariana Lindquist/Bloomberg

Robots work on the welding line at a Beijing Hyundai Motor Co. plant in Beijing, China, on March 15.

Photograph by Tomohiro Ohsumi/Bloomberg

Welder David Warner works on a joint between two sections of pipe during construction of the Gulf Coast Project pipeline in Prague, Oklahoma, on March 11.

Photograph by Daniel Acker/Bloomberg

Workers view the landing gear of the Bombardier Inc. CSeries 100 test airplane after the unveiling at the company’s production facility in Mirabel, Quebec, Canada, on March 7.

Photograph by Patrick Doyle/Bloomberg

Transmission components sit on the assembly line at the Chrysler Group transmission plant in Kokomo, Indiana on Feb. 28.

Photograph by Daniel Acker/Bloomberg

Steve Fossum tack welds a ventilation duct as it is assembled at the Giese Manufacturing Co. in Dubuque, Iowa, on Feb. 14.

Photograph by Daniel Acker/Bloomberg

An employee uses a buffer to smooth the outer edge of a courthouse clock at the Verdin Corp. production facility in Cincinnatti, Ohio, on Nov. 11, 2012.

Photograph by Ty Wright/Bloomberg

A worker assembles a Eurocopter AS350 Ecureuil (Squirrel) helicopter at the Helibras production facility in Itajuba, Brazil, on Oct. 4.

Photograph by Dado Galdieri/Bloomberg

A laborer works on a lathe machine in a workshop in Mayapuri Industrial Area in New Delhi, India, on July 24.

Photograph by Sanjit Das/Bloomberg

Finished pairs of pants hang on a rack at Dynotex Inc. garment factory in the Brooklyn borough of New York, on July 11.

Photograph by Victor J. Blue/ Bloomberg