Weeks into the project, a contractor hired to build an abortion clinic [in Austin, Texas] hit a brick wall. Plumbers and carpenters would not work for him. Drywall installers and heating subcontractors would not do business with him. Cement suppliers for miles around would not touch the job.

He had been hit with a boycott organized by abortion foe and construction executive Chris Danze.

Browning Construction Co. finally quit the job this month after six weeks in what national Planned Parenthood officials said was the first such boycott.

"I never thought so many different trades would join in" the boycott, said James Browning, who runs San Antonio-based Browning Construction.

Mr. Danze, a 48-year-old who has protested outside clinics, compares the building of an abortion clinic to construction of a concentration camp during the Holocaust.

"We can't just look the other way," he said. "We can't just take the blood money and run."

Planned Parenthood, denounced the boycott, says it will press on with construction to discourage similar tactics elsewhere.

The privately funded $6.2 million clinic was set to open next fall to offer abortions and provide health care for women and men, including gynecological services, AIDS testing, vasectomies, cancer screening and contraceptives, Planned Parenthood spokeswoman Danielle Tierney said.

Mr. Danze, an owner of Maldonado & Danze Inc., a concrete foundation contractor, oversaw a telephone and letter writing campaign urging more than 750 Austin- and San Antonio-area businesses not to provide supplies or services for the project.

Contractors were flooded with phone calls from the public warning them to stay away from the clinic project.

Planned Parenthood said the boycott was waged through "intimidation and harassment."

Ms. Tierney said one subcontractor, whom she would not identify, received more than 1,200 calls from around the country - many to his home - warning him not to participate. "This is not a simple demonstration of free speech rights," she said.

Ms. Tierney said Planned Parenthood has received calls from other contractors who want to help build the clinic.