How many cups of salt are in a pound of rock salt?

1 rock salt image

happytrave

Rock salt for melting snow - I need to know how many 1 cup measuring cups you would get from a pound of salt.
Please consider the standard 1 cup measuring cup such as one would use in a kitchen. Now, how many cups of salt are in a pound of rock salt - of the type one uses to melt ice on a sidewalk? Thank you!!
For future reference, if anyone wants to know: 2 kitchen standard measuring cups of rock salt of the type used for snow and ice removal weigh 1.6 pounds. This is not the same as Kosher salt, which is lighter. I am answering my own question based on measurements done by 2 different parties which I believe are correct.
Neither of the answers given by the responders was correct; perhaps the question was misunderstood or misinterpreted. Thank you anyway for making an effort. :)

Answer
are you want to sell the salt with cup measurements