No, I have never heard anything about the Panama Canal incident.
The information I have on the Dargis family is:
Napoleon L. Dargis was born about 1846. He married Angelina Dupuis in Quebec about 1878. They had 9 children: 2 were born in Canada-Emma(1879), George(1882)...the other 7 children were all born in Little Falls Minnesota- Leo(1885), Otis(1886), Aloysius(1888), Edith(1890), twins- Blanche and Beatrice (1893), and Marie(1895). The family came to Minnesota about 1884-1885. The story I've heard was that Napoleon had a lumber and bricking company in Little falls. His bookeeper stole from him and he lost his business. Because of this, they left and moved to New Orleans to work at the lumber companies down here in about 1900. He worked for a lumber company in Ruddock, La and in New Orleans. He died in 1904 (at 58yrs) and Angelina died in 1938- both died in New Orleans. There, they were buried in St. Mary's Cemetery. Also, their children Emma, George, Otis, Edith Marie, and Blanche(and husband) were buried there.
Aloysius Dargis was my father-in-law. His son, George was my husband.