Abstract: A grain conveyor chain for a harvesting vehicle includes a chain made of standard chain elements and multiple scoops. The scoops are fastened on the chain and the standard chain elements have inner plates, outer plates, pins, and/or sleeves, with each scoop being in direct contact with a standard chain element.

Abstract: The invention relates to a grain conveyor chain for a harvesting vehicle having a chain made of standard chain elements, wherein the standard chain elements comprise inner plates, outer plates, pins and/or sleeves, and a plurality of scoops, wherein the scoops are fastened on the chain and wherein the chain has chain links, which are partially back-rigid, and to a method for operating the grain conveyor chain according to the invention in a harvesting vehicle.

Abstract: A grain conveyor chain for a harvesting vehicle includes a chain made of standard chain elements and multiple scoops. The scoops are fastened on the chain and the standard chain elements have inner plates, outer plates, pins, and/or sleeves, with each scoop being in direct contact with a standard chain element.

Abstract: The invention relates to a grain conveyor chain for a harvesting vehicle having a chain made of standard chain elements, wherein the standard chain elements comprise inner plates, outer plates, pins and/or sleeves, and a plurality of scoops, wherein the scoops are fastened on the chain and wherein the chain has chain links, which are partially back-rigid, and to a method for operating the grain conveyor chain according to the invention in a harvesting vehicle.

Abstract: A proppant composition may include at least about 50 wt % total silica and up to about 50 wt % total alumina and a connected porosity greater than or equal to about 5%. A proppant precursor composition may include an alumina- or aluminosilicate-containing material and diatomaceous earth, wherein the diatomaceous earth may be greater than or equal to about 25 wt %. A method of making a proppant may include mixing an alumina- or aluminosilicate-containing material and diatomaceous earth to form a precursor composition, pelletizing the precursor composition, and sintering the pelletized precursor composition to form a sintered proppant having a connected porosity greater than or equal to about 5%. A method of treating a fracture site may include delivering a sintered proppant including an active agent to a well site, and dispersing the active agent from the sintered proppant within the well site.