Gunpowder Explosions in Delaware, U.S.A 19th and Early 20th Centuries

In regards to gunpowder explosions in Delaware in the 19th and early 20th centuries, I am looking for information on the following individual (s):

Edward and Thomas Reynolds, from Belturbet, Co. Cavan; Province Ulster; Barony Loughtee Lower; Civil Parish Annagh; Poor Law Union Cavan. They were brothers who started working in the powder yards in 1816 or 1817 and died in the massive explosion of March, 1818. Thomas was married to Johanna and the brothers might have been joined in the powder yards by a third brother, James, at about the same time. Thomas and Johanna had two daughters, Anne, born circa 1808; and Elizabeth, born circa 1810.

Thank you for any information provided!