My uncles farm produced eggs for the hatchery. During the peak laying season we gathered and graded 4000 to 4500 hatching eggs a day. We graded them based on weight and condition (no cracked eggs).
We counted and logged the daily production. It was easy, we just counted the cases we filled. We used 12x12 flats (30 eggs to a flat).
We didn’t count the culls. I think we got at least 3 flats a day of extra large (almost a 100). This was in the 1970’s and we didn’t log the counts. My uncle sold the extra large eggs to a few people. Some had single, double, or triple yolks. You never knew until it was cracked open.
We even occasionally cracked open a egg and found another tiny egg inside. We found blood inside eggs. We learned to never crack a egg directly into a mixing bowl or skillet. It was better to use a saucer and check it.
Approx 4000 graded hatching eggs a day with 100 extra large culls. We also had other culls, marble sized eggs, soft shelled, and cracked that didn’t get counted.
My family ate some of the cracked eggs. That scares me now. Thankfully no one got sick.
Boxed eggs. Brings back bad memories. I helped load the truck. Those filled boxes weighed at least 30 lbs. That’s a lot for a 14 year old kid.
Hatching eggs are labor intensive. They had to be gathered and graded by hand. The hens were in pens with the roosters