
Tamarack trees on the drive to Bemidji MN
International Falls, MN. Thursday October 17
Two days off and once again the weather has not been advantageous. On the positive side, it should be relatively nice this weekend for visitors and our car’s new battery seems to be working fine.
Tuesday was a true experience although part of the day is still beyond my comprehension. We started off visiting NOvA Far Detector Lab. Say what??? Well, and I quote here: “The NOvA Experiment is a liquid scintillator detector experiment searching for electron neutrino appearance in the NuMI muon neutrino and antineutrino beam. A 300 ton near detector is set up at Fermilab. 500 miles north, the 14,000 ton far detector at NOvA Far Detector Lab is operated by the University of Minnesota at Ash River, Minnesota.” If that does not explain it for you, I am not sure what will. But I will give my short description.

Did you learn this in physics?
Neutrinos are extremely small particles, way smaller than atoms. They do not have electric charge. Neutrinos change into different types. We know very little about them even though supposedly they are the most common particle in the universe. Knowing more about them will help us better understand the universe and matter. A previous experiment ending at Soudan MN tried to measure neutrinos sent in a straight line. This experiment tried to measure neutrinos that diverge from the straight line.

NOvA Far Detector Lab, Ash River MN
Ash River, about 40 miles south of International Falls, was chosen due to its distance from Fermilab in the Chicago area and the fact it has just about the last infrastructure before the Canadian border. It was stunning to drive through forests with few buildings to come upon this massive building. Once inside, the amazement continues. The largest free standing PVC structure in the world is inside, crammed with 10,752 extruded PVC modules. Inside the modules are fiber cables and an oil that reacts with ionizing radiation. When a neutrino hits the module, a series of electronics attached to the fibers records the important data. (Don’t ask me what that data is.)
The site offers tours during the summer. We called and asked for a tour even though it would be just the two of us. Request granted. The building and complex took two years to build, with the first neutrinos detected in 2013. The experiment is due to continue until 2025. A new experiment designed to build on the information discovered here is set to begin in 2021 in Lead SD. For further understanding of NOvA, try watching videos on YouTube.
We left Ash River and had lunch at the Coffee Landing in International Falls. Coffee Landing roasts its own coffee and serves meals until 5 PM. Chris and I both had a breakfast meal which was quite tasty. Coffee Landing is just a block from two museums sharing one space. The Koochiching County Historical Museum relates the history of the area from its earliest formation. The museum is open daily and has wonderful exhibits for a small town. Even the display cases have been hand crafted locally based on the curator’s design. We learned more about the minor gold rush at Rainy Lake, lumbering, and the development of a paper milling empire that continues in a reduced form today.

Painting and model of Virginia, luxury cruiser on Rainy Lake

Lunch baskets from early 1900s on top, Ojibwe baskets on bottom
A few of the notable exhibits included: models of boats used on the lakes from steamers to personal luxury boats to commercial fishing boats; vintage snowmobiles; examples of baskets from the Ojibwe culture and from paper mill lunch boxes. The curator told us a story about the paper mill lunch boxes. The operators of the paper making machines could not leave the machines during their shift. The company sent a person to the operator’s home where the wife would put the husbands’s lunch in a lunch basket woven from birch, etc. The husband would bring the lunch basket home with him. Soon everyone recognized that carrying a lunch basket symbolized a position of importance and the use of a woven lunch basket spread to most workers. Some local people specialized in the creation of the woven baskets for mill employees.

Bronco in retirement
The other half of the museum was devoted to Bronco Nagurski. Young’uns might not recognize his name. He was famous in the 1920s and 1930s as a football player for the Minnesota Gophers and Chicago Bears. Just one indication of his greatness is that he is the only football player named an All American at both defensive and offensive positions in the same year. He was inducted into the Collegiate Hall of Fame and the NFL Hall of Fame in their inaugural years.
Nagurski was born in Canada but came to International Falls at an age five. He married his local high school sweetheart and lived out his life in International Falls after retirement. Like many families up here, relatives still live in the area.
Walking around International Falls after the museum, I was struck by two items. First, the town must have made a commitment several years ago to plant new trees with glorious fall color. Along the Main Street, one observes short trees with brilliant red, orange and yellow colors. Colors not noticed in such abundance on the side streets or in the natural forested areas. Second, like numerous downtowns, probably in the name of civic improvement, the sidewalks are not concrete but some form of brick pavers. As seems inevitable to me, the pavers pop out of plumb, creating tripping hazards or deep ponds of water during rainy periods. Haven’t landscape architects figured this out yet??
Wednesday we drove the two hours to Bemidji. Our goal was to pick up two prescriptions and visit a state park or two. Early morning rain caused us to reduce our park visitation to just one, Lake Bemidji State Park. Here we hiked, partially out to a bog on a boardwalk. Big Bog State Park nearby has a longer boardwalk through a more varied terrain but that will have to wait for another trip.
Both in the park and along the highway, we finally observed first hand the autumn presentation of tamarack trees. Over the years we have frequently heard tamarack trees described as the only conifers (pine trees) which have needle like leaves that turn yellow in autumn and fall off, leaving the tree looking dead until spring time. Tamaracks are a northern tree type whose range just barely reaches to the Twin Cities. As green conifers, Chris and I would not be able to distinguish them. Right now, the trees have turned yellow and the needles are starting to fall. Soon they will be bare and again unrecognizable to us.

Recent Animal sightings
In other notable animal sightings, we observed our first sighting of river otters. A group of five otters were frolicking in Rainy Lake. While not unusual for Minnesotans, Chris spotted a bald eagle in a tree along the road to Bemidji. We also saw our first buck. Deer have been plentiful but always does and fawns until Tuesday afternoon.

Big Bog Lake at Lake Bemidji State Park, MN
Ed and Chris. International Falls Thursday Oct. 17 9:30 PM











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