What Milesstandish states is true.
Located on the Arkansas Oklahoma border we are fortunate
enough to have 2 TWO major pipelines in our area. one coming from the Northewst and one coming from the South. Some of the time, what you get at the same station, on different days is like cutting a deck of cards.
People may say I am wrong on this but I also used to work in the ferroalloys industry and sold to steel mills foundries and aluminum plants all over the Southwest. There were approximately 10 major competitors in the business and we all warehoused at the same location in the port of Houston. In 1982 Several freighters of SilicoManganese became available to us from Eastern Russia. WE ALL (all 10 of us) SOLD MATERIAL FROM THAT SAME LOT. We had the warehouse adjust the chemical lab analysis content on the shipping documents to the customer, everything in spec of course, and all customer specifically prohibited fines material would sift to the bottom of the trailer during truck during over the road shipping vibration.
I had one almost exclusive loyal customer that had a specification limit of 10% fines (material passing through an 8mesh screen) and I would constantly ship him 30% or more. He never checked his unloading and no one in his plant did any material recovery computations. I had to get rid of large volumes of fines somewhere, I mean you can't have any losses in this business and no one would pay for a briquetting machine.
Any BULK COMMODITY is handled in the same manner in this country. Anyone who tells you differently is either the CEO or the salesman for one of the subject companies.