Electronic Journal of Differential Equations, Vol. 2000(2000), No. 53, pp. 1-13. Title: Carleman estimates for the Euler-Bernoulli plate operator Author: Paolo Albano (Univ. di Roma "Tor Vergata", Italy) Abstract: We present some a-priori estimates of Carleman type for the Euler-Bernoulli plate operator. As an application, we consider a problem of boundary observability for the Euler-Bernoulli plate coupled with the heat equation. Submitted March 14, 2000. Published July 12, 2000. Math Subject Classifications: 93B07, 74F05. Key Words: Carleman estimates; observability; thermo-elasticity.