Published Feature Articles:

1990 - USA Patent - Permanent Soil Nailing Wall method

1989 - 1st CalTrans Soil Nailing Permanent Wall - San Bernardino, CA

1988 - 1st Southern California area Soil Nailing application - Beverly Hills, CA

1987-  1st Seattle area Soil Nailing application

1986 - 1st Permanent Architecturally finished Soil Nailed Wall - San Jose, CA