The Jennings field, one of the greatest in the United States, produced up to and including 1907 more than 26,000,000 barrels of high-grade oil, twelve-thirteenths of which came from an area of only 50 acres, one well producing a tenth of the entire output.
The cost derives from the application of huge amounts of energy, intelligence, and technology to obtain and process the raw materials: digging and smelting to create high-grade steel, harvesting and refining and molding to make rubber parts, and so on.
Also I made pores for porous plasters and high-grade holes for doughnuts and buttons.
There are within the duchy four grammar schools (gymnasia), five semi-classical and modern schools, a teachers' seminary and four high-grade girls' schools.
The Boulder district developed very rapidly after 1902; its product is a high-grade illuminant with paraffin base.
It has an academy of practical medicine, a commercial high school, a theological seminary, four Gymnasia (classical schools), numerous lower-grade schools, a conservatory of music and several high-grade ladies' colleges.
There is a great variety in the grades of oils produced in the state, ranging from the heavy asphaltic oils of the Popo Agie and Lander fields to the high-grade lubricants and superior light products obtained from the wells in the Douglas, Salt Creek and Uinta county fields.
It has an Evangelical and a Roman Catholic church, a high-grade school, and tobacco and cigar manufactories and breweries.
Zinc ores, in the several varieties of carbonates, silicates, oxide, sulphide and sulphate of zinc, have been found in several of the Australian states, but have attracted little attention except in New South Wales, where special efforts are being made successfully to produce a high-grade zinc concentrate from the sulphide ores.
Among other buildings are the town hall (built 1899-1900), the palace of the hereditary prince, the theatre, the administration offices, the law courts, the Amalienstift, with a picture gallery, several high-grade schools, a library of 30,000 volumes and an excellently appointed hospital.