Question

 Where was modern concrete invented at?

Answer Roman Empire sometime back in the day
http://wiki.answers.com/Q/Where_was_modern_concrete_invented_at

Top Q&A For: Where was modern concrete invented at

When was the first earbuds invented and who invented it?

I know this sounds weird but where the speaker is suck on it and try using it again
http://wiki.answers.com/Q/When_was_the_first_earbuds_invented_and_who_invented_it

Who invented the bullet train and when was it invented?

Japan's "Bullet Train" was developed by Dr. Hideo Shima (1901 - 1998). Dr. Shima began investigations in 1948 and in 1958 it was decided to go ahead with a new line which followed the Tokaido road... Read More »
http://answers.yahoo.com/question/index?qid=20070614203924AAKL4bP

When was concrete discovered?

Since the dawn of time, man has mixed earthen materials to make durable building products. Concrete was used in various primitive forms by the Chinese, Egyptians, and Greeks. However, it was in the... Read More »
http://www.answerbag.com/q_view/1986538

When can you drive on fresh concrete?

The length of time it takes concrete to dry depends somewhat on the temperature and moisture level. While formal concrete institutions suggest at least seven days, a more common recommendation is t... Read More »
http://www.answerbag.com/q_view/2051298


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