Tour D â This is the most popular walking tour of the outside downtown walking tours. 1  This is the most balanced tour of being outside and indoors. The first half of the tour takes us southwest into Sam Houston Park. We see 10 historical buildings ranging from 1823 to 1905. These buildings include: 2  1823 cabin,
The current estimated cost for cloud seeding consultant services is $550,000 for the initial year, with the option to extend the services for four additional one-year terms of $400,000 each, for a maximum not-to-exceed total of $2,150,000.
The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide). Liquid propane, which expands into a gas, has also been used. This can produce ice crystals at higher temperatures than silver iodide.loud seeding has been shown to be effective in altering cloud structure and size and in converting supercooled liquid water to ice particles. The amount of precipitation due to seeding is difficult to quantify. A key challenge is in discerning how much precipitation would have occurred had clouds not been seeded.