Mike Stone / Reuters Ronald Tanner of Jonesboro, Texas carries supplies to be delivered to residents of West displaced by the massive explosion of a fertilizer plant in the town of West, near Waco, Texas April 18, 2013. Rescuers worked in cold rain on Thursday to find survivors amid the rubble of houses destroyed in a fiery explosion at a Texas fertilizer plant filled with hazardous chemical tanks.

By Devin Coldewey, Contributing Writer, NBCNews.com

Charity and medical organizations have been mobilizing since Wednesday night when the massive explosion of a West, Texas fertilizer facility that killed as many as 15 people and injured at least 150 more.

While rescuers and emergency workers pick through the rubble of homes and buildings destroyed by the blast, aid organizations like the American Red Cross and Salvation Army have been providing food and shelter to the displaced and injured.

In addition to the cost of medical care and emergency services, the recovery and rebuilding of the area surrounding the plant will take both time and money. If you would like to contribute, here are some organizations that are working to help survivors and to rebuild:

American Red Cross of Central Texas

The Red Cross is providing water and other immediate needs to survivors. There's a Web page here with some numbers and addresses for further information on the organization's work relating to the West explosion, as well as how to donate. You can donate to the Red Cross's efforts in general by texting REDCROSS to 90999, or visit the website to see how you can provide more localized help.

The Salvation Army

The Salvation Army mobilized five emergency mobile kitchens to the Texas area to help provide displaced residents with food. The group is also distributing warm clothes and blankets to people whose homes have been destroyed. You can donate directly to the Salvation Army's efforts using this online form.

The Blood Center of Central Texas

With so many injured, blood will be in high demand at hospitals and emergency stations. The Blood Center helps organize blood drives. You can join one of those efforts, or support the center by donating money via a link at its donation page. The demand for blood will continue to be high over the next several weeks, so also consider making an appointment to give later in the month.

Catholic Charities, Central Texas

This Catholic aid organization works with the Red Cross and handles more long-term case management. Monetary donations can be made here, and the organization asks that items be donated to the local St Vincent de Paul centers.

Scott & White Healthcare

The non-profit health care organization, also the principal clinical research and education campus for The Texas A&M Health Science Center College of Medicine, is handling the treatment of more than two dozen of the residents injured by the explosion. Scott & White is also organizing blood drives over the next week.

West Independent School District

West's schools and other critical community infrastructure will likely be stressed by lack of resources over the months to come. You can donate directly to the district by filling out and mailing, or faxing in, this form (PDF).

Limbs for Life Foundation

Explosions like this one often result in serious limb trauma, leading to expensive rehabilitation and prosthetics. Limbs For Life helps people who need prosthetic care but can't afford it.