The incident occurred Saturday afternoon at a home in Knoxville, about 40 miles southeast of Des Moines, according to a statement from the Marion County Sheriff's Office.
Tape was then wrapped over the top of the metal tubing, inadvertently creating a pipe bomb. The family had welded a homemade stand, which was filled with gunpowder, to a metal base. "The piece of metal that hit her then continued another 144 yards".
They drilled a hole in the side of the stand to install a fuse and placed a piece of wood on top of the gunpowder, before adding colored powder indicating the baby's gender, the statement said.
All Blacks spring semi-final surprise ahead of England clash
Ford is also a useful man to have on your side if you potentially require 25 points or more to win a World Cup semi-final. Sean Fitzpatrick, who captained the All Blacks 62 times, has spent some of this week with the squad in Tokyo.
Kreimeyer was killed instantly, police said.
Sheriff Jason Sandholdt's office said members of the family had been experimenting with different types of explosive material.
The state fire marshal and the Bureau of Alcohol, Tobacco and Firearms are investigating, the sheriff's office said.
Gender-reveal parties have become increasingly elaborate in the past few years, with expectant parents going to great lengths to ensure the moment of reveal is as elaborate as possible.
Turkey Syria offensive: Some US troops to stay, says Trump
An Iraqi official said his government has told the Americans that they will allow the US forces to pass through, but not to stay. One man blocked the path of a USA van with a poster reading: "Thanks for USA people, but Trump betrayed us".
In Australia, a vehicle that began slowly expelling blue smoke to announce the gender of a baby burst into flames.
The reveals can be as simple as cutting a cake or releasing balloons, but some events are more over the top.
One of the pioneers of the gender-reveal movement said in July that it was time to "re-evaluate" the practice and that her own daughter had begun to explore her gender and defy gender norms.
Warren leads, Buttigieg jumps into second place in caucus poll
Amy Klobuchar (D-Minn.) and Beto O'Rourke, a former Texas Congressman, had 3 percent each. Businessman Andrew Yang is available in at 2 % and the rest polled at 1 % or decrease.